Minecraft:Java Edition 15w31a - Revision history

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	{{Infobox version		{{Dangerous version\| Updating to this version will alter any signs. Each time a sign is reloaded it will continue to gain more characters (specify the equation for character growth). Eventually, after the sign reaches somewhere around 65,535 characters, loading the sign will crash the game, and can essentially force the player to no longer be able to enter the world until unknown version.
			\| version = development
			\| type = hardlock
			\| edition = java
			}}{{Infobox version
	\|title=Minecraft 15w31a		\|title=Minecraft 15w31a
	\|image=Java Edition 15w31a.png		\|image=Java Edition 15w31a.png

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	* Drop chorus fruit.		* Drop chorus fruit.

	'''{{Animate\|Chorus Flower JE1 BE1.png; Chorus Flower Dead JE1 BE1.png\|32px}} Chorus flowers'''		'''{{MC/Animate\|Chorus Flower JE1 BE1.png; Chorus Flower Dead JE1 BE1.png\|32px}} Chorus flowers'''
	* Spawn on the top of the chorus trees.		* Spawn on the top of the chorus trees.
	* Break if the supporting block below is broken.		* Break if the supporting block below is broken.
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	* A portal block used to transport the player to the new outer regions of the end.		* A portal block used to transport the player to the new outer regions of the end.
	** The texture is identical to the [[Minecraft:End portal]] block, but the model is that of a full block rather than plane.		** The texture is identical to the [[Minecraft:End portal]] block, but the model is that of a full block rather than plane.
	* The player cannot use {{~~control~~\|pick block}} or {{~~cmd~~\|give}} to obtain it.		* The player cannot use {{MC/Control\|pick block}} or {{MC/Cmd\|give}} to obtain it.
	** It can only be set by using {{~~cmd~~\|setblock}}.		** It can only be set by using {{MC/Cmd\|setblock}}.
	* Naturally generate after killing the dragon and traveling someplace new in the End with it.		* Naturally generate after killing the dragon and traveling someplace new in the End with it.
	* Show yellow beacon beam when created and used.		* Show yellow beacon beam when created and used.
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	* Drop dirt, even when using Silk Touch.		* Drop dirt, even when using Silk Touch.
	* Cannot be obtained from the Creative inventory.		* Cannot be obtained from the Creative inventory.
	** But unlike farmland, it can be obtained by using the {{~~control~~\|pick block}} key in Creative.		** But unlike farmland, it can be obtained by using the {{MC/Control\|pick block}} key in Creative.

	'''[[File:Purpur Block JE1 BE1.png\|32px]] Purpur blocks'''		'''[[File:Purpur Block JE1 BE1.png\|32px]] Purpur blocks'''
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	'''[[File:Structure Block JE1.png\|32px]] Structure blocks'''		'''[[File:Structure Block JE1.png\|32px]] Structure blocks'''
	* Only placable via {{~~cmd~~\|setblock}}.		* Only placable via {{MC/Cmd\|setblock}}.
	* Can be used with NBT parameters ({{~~cmd~~\|setblock}} or {{~~cmd~~\|blockdata}}).		* Can be used with NBT parameters ({{MC/Cmd\|setblock}} or {{MC/Cmd\|blockdata}}).
	** GUI is only used by Mojang employees.		** GUI is only used by Mojang employees.
	* Have a letter on the texture based on its mode.		* Have a letter on the texture based on its mode.
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	* The tip is gold colored, but just in the item model.		* The tip is gold colored, but just in the item model.
	* Show mob and player outlines in their respective team color when hit – even when invisible.		* Show mob and player outlines in their respective team color when hit – even when invisible.
	* Tag for entities to disable outlines. {{~~more~~ info\|please add corresponding tag here}}		* Tag for entities to disable outlines. {{MC/More info\|please add corresponding tag here}}
	* Tag to force outline: <code>{Glowing:1b}</code>.		* Tag to force outline: <code>{Glowing:1b}</code>.
	* The glowing is a status effect.		* The glowing is a status effect.
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	** Yields 2 spectral arrows.		** Yields 2 spectral arrows.

	'''{{Animate\|Tipped Arrow JE1.png; Arrow of Night Vision JE1 BE1.png; Arrow of Invisibility JE1 BE1.png; Arrow of Leaping JE1 BE1.png; Arrow of Fire Resistance JE1 BE1.png; Arrow of Swiftness JE1 BE1.png; Arrow of Slowness JE1 BE1.png; Arrow of Water Breathing JE1 BE1.png; Arrow of Healing JE1 BE1.png; Arrow of Harming JE1 BE1.png; Arrow of Poison JE1 BE1.png; Arrow of Regeneration JE1 BE1.png; Arrow of Strength JE1 BE1.png; Arrow of Weakness JE1 BE1.png\|32px}} Tipped arrows'''		'''{{MC/Animate\|Tipped Arrow JE1.png; Arrow of Night Vision JE1 BE1.png; Arrow of Invisibility JE1 BE1.png; Arrow of Leaping JE1 BE1.png; Arrow of Fire Resistance JE1 BE1.png; Arrow of Swiftness JE1 BE1.png; Arrow of Slowness JE1 BE1.png; Arrow of Water Breathing JE1 BE1.png; Arrow of Healing JE1 BE1.png; Arrow of Harming JE1 BE1.png; Arrow of Poison JE1 BE1.png; Arrow of Regeneration JE1 BE1.png; Arrow of Strength JE1 BE1.png; Arrow of Weakness JE1 BE1.png\|32px}} Tipped arrows'''
	* Arrows tipped with potions.		* Arrows tipped with potions.
	** 14 new arrow types in total.		** 14 new arrow types in total.
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	* Cannot be eaten.		* Cannot be eaten.

	'''{{InvSprite\|Shulker Spawn Egg Revision 1}} Shulker spawn eggs'''		'''{{MC/InvSprite\|Shulker Spawn Egg Revision 1}} Shulker spawn eggs'''
	* Used to spawn a shulker.		* Used to spawn a shulker.
	* Purple with darker purple spots.		* Purple with darker purple spots.
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	=== World generation ===		=== World generation ===
	'''{{EnvLink\|End City\|End cities}}'''		'''{{MC/EnvLink\|End City\|End cities}}'''
	* Generate on the new outer End islands.		* Generate on the new outer End islands.
	* Dungeon-type structure fashioned like a branching tower made of End stone and many of the new blocks.		* Dungeon-type structure fashioned like a branching tower made of End stone and many of the new blocks.
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	* Generate with shulkers in it.		* Generate with shulkers in it.

	'''{{EnvLink\|End Ship\|End ships}}'''		'''{{MC/EnvLink\|End Ship\|End ships}}'''
	* Can generate up in the air, right next to an End city.		* Can generate up in the air, right next to an End city.
	** Always generate sailing away from what appears to be a pier.		** Always generate sailing away from what appears to be a pier.
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	*** The player cannot click both buttons at the same time.		*** The player cannot click both buttons at the same time.
	** This is achieved through an extra inventory slot called the "offhand" slot.		** This is achieved through an extra inventory slot called the "offhand" slot.
	*** Pressing {{~~key~~\|F}} (by default) switches whatever item is selected in the hotbar with the item in the offhand (including no item).		*** Pressing {{MC/Key\|F}} (by default) switches whatever item is selected in the hotbar with the item in the offhand (including no item).
	*** The offhand slot is displayed next to the hotbar when it's not empty (left for right-hand players and vice versa).		*** The offhand slot is displayed next to the hotbar when it's not empty (left for right-hand players and vice versa).
	**** It's also available in the [[Minecraft:inventory]] screen.		**** It's also available in the [[Minecraft:inventory]] screen.
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	'''Status effects'''		'''Status effects'''
	* {{~~EffectLink~~\|Levitation}}		* {{MC/Effectlink\|Levitation}}
	** Received when the player is hit by shulker projectiles.		** Received when the player is hit by shulker projectiles.
	** Makes player involuntarily float high into the air.		** Makes player involuntarily float high into the air.
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	*** Level 254 results in slow fall (similar to lunar gravity).		*** Level 254 results in slow fall (similar to lunar gravity).

	* {{~~EffectLink~~\|Glowing}}		* {{MC/Effectlink\|Glowing}}
	** Received when players or mobs are hit by spectral arrows.		** Received when players or mobs are hit by spectral arrows.
	** Makes player's outline glow, seen even through non-transparent blocks.		** Makes player's outline glow, seen even through non-transparent blocks.
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	'''Resource packs'''		'''Resource packs'''
	{{Resource pack format/value\|2}}		{{MC/Resource pack format/value\|2}}
	* Older resource packs require user acknowledgment to use.		* Older resource packs require user acknowledgment to use.

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	\|56268\|Breaking the bedrock below an ender crystal (in the End) creates performance drops, rapidly flickering light.		\|56268\|Breaking the bedrock below an ender crystal (in the End) creates performance drops, rapidly flickering light.
	\|68062\|Boss health bar only visible when looking at boss.		\|68062\|Boss health bar only visible when looking at boss.
	\|69320\|Data tag output by {{~~cmd~~\|entitydata}} and {{~~cmd~~\|blockdata}} contains too many commas.		\|69320\|Data tag output by {{MC/Cmd\|entitydata}} and {{MC/Cmd\|blockdata}} contains too many commas.
	\|75082\|End music will stop every time the ender dragon loads out of view.		\|75082\|End music will stop every time the ender dragon loads out of view.
	}}</onlyinclude>		}}</onlyinclude>
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	== References ==		== References ==
	{{~~reflist~~}}		{{MC/Reflist}}

	== Navigation ==		== Navigation ==
	{{Navbox Java Edition versions\|1.0}}		{{MC/Navbox Java Edition versions\|1.0}}

	de:15w31a		de:15w31a

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{{Infobox version
|title=Minecraft 15w31a
|image=Java Edition 15w31a.png
|edition=Java
|type=Snapshot
|date=July 29, 2015
|parent=1.9
|clienthash=d702effa2e2ff9f79ffc74dc6becc3eeca376fee
|jsonhash=bd5a158581e6ceec4c34b32774153661b63913e3
|serverhash=7799f1f6a486be08185b470a64ca4649e37de578
|exehash=69df0c2615d2ea5ebe08381df6d1bbd3c403c036
|prevparent=1.8.9
|next=15w31b
|nextparent=1.9.1
}}<onlyinclude>

'''15w31a''' is the first [[Minecraft:snapshot]] for [[Minecraft:Java Edition 1.9]], released on July 29, 2015,<ref>{{cite|url=https://www.mojang.com/2015/07/minecraft-snapshot-15w31a/|archive-url=https://web.archive.org/web/20150811074811/https://mojang.com/2015/07/minecraft-snapshot-15w31a/|title=Minecraft snapshot 15w31c|author=[[Minecraft:Dinnerbone]]|website=Mojang.com|date=July 29, 2015}}</ref> with a large amount of [[Minecraft:End]]-related changes. This is the first snapshot released in 2015.<ref group="note">Not counting [[Minecraft:15w14a]], which was an April Fools' joke snapshot</ref>

== Additions ==
=== Blocks ===
'''[[File:Chorus Plant JE1 BE1.png|32px]] [[Minecraft:Chorus plant]]s'''
* Generate in [[Minecraft:the End]].
* Can be grown using chorus flowers.
* Breaks in quick succession if the supporting chorus plant below is broken.
* Drop [[Minecraft:chorus fruit]].

'''{{Animate|Chorus Flower JE1 BE1.png; Chorus Flower Dead JE1 BE1.png|32px}} [[Minecraft:Chorus flower]]s'''
* Spawn on the top of the chorus trees.
* Break if the supporting block below is broken.
** It only drops when mined directly.
* Can only be planted on [[Minecraft:End stone]] in any dimension.
* Has a different texture when it can no longer grow.

'''[[File:Dragon Head (S) JE1.png|32px]] [[Minecraft:Dragon head]]s'''
* While worn, the head's mouth opens and closes repeatedly when moving around.
* When powered with redstone while placed on solid block, the jaw starts to open and close.
** Keeps the mouth position of the exact moment it was unpowered.

'''[[File:End Gateway JE1.png|32px]] [[Minecraft:End gateway block]]s'''
* A portal block used to transport the player to the new outer regions of the end.
** The texture is identical to the [[Minecraft:End portal]] block, but the model is that of a full block rather than plane.
* The player cannot use {{control|pick block}} or {{cmd|give}} to obtain it.
** It can only be set by using {{cmd|setblock}}.
* Naturally generate after killing the dragon and traveling someplace new in the End with it.
* Show yellow beacon beam when created and used.
* Emits light level of 15.

'''[[File:End Rod (U) JE1 BE1.png|32px]] [[Minecraft:End rod]]s'''
* Generate in the [[Minecraft:End cities]].
* Placeable horizontally and vertically.
* Emits light level of 14.
** The model has a little base that is oriented against the block it was placed on.
*** If placed on top of another rod, then it has the opposite orientation.
* Produce white particles.
* Used as a lighting source with the same efficacy as torches.
* Unlike torches, they are tangible.
** Horizontal End rods can be stepped up onto like slabs.

'''[[File:End Stone Bricks JE1 BE1.png|32px]] [[Minecraft:End stone bricks]]'''
* Generate in the End cities.
* Can be crafted with 4 blocks of [[Minecraft:End stone]].

'''[[File:Dirt Path JE1 BE1.png|32px]] [[Minecraft:Grass path]]s'''
* Are visually 15/16 block high.
* Obtainable by right-clicking [[Minecraft:grass block]]s with a shovel.
** This reduces the shovel's durability by one.
* Drop dirt, even when using Silk Touch.
* Cannot be obtained from the Creative inventory.
** But unlike farmland, it can be obtained by using the {{control|pick block}} key in Creative.

'''[[File:Purpur Block JE1 BE1.png|32px]] [[Minecraft:Purpur block]]s'''
* Generate in the End cities.
* Can be crafted with [[Minecraft:popped chorus fruit]].

'''[[File:Purpur Pillar (UD) JE1 BE1.png|32px]] [[Minecraft:Purpur pillar]]s'''
* Generate in the End cities.
* Can be crafted with purpur slabs.

'''[[File:Purpur Slab JE1 BE1.png|32px]] [[Minecraft:Purpur slab]]s'''
* Generate in the End cities.
* Can be crafted with purpur blocks.

'''[[File:Purpur Stairs JE1 BE1.png|32px]] [[Minecraft:Purpur stairs]]'''
* Generate in the End cities.
* Can be crafted with purpur blocks.

'''[[File:Structure Block JE1.png|32px]] [[Minecraft:Structure block]]s'''
* Only placable via {{cmd|setblock}}.
* Can be used with [[Minecraft:NBT]] parameters ({{cmd|setblock}} or {{cmd|blockdata}}).
** GUI is only used by Mojang employees.
* Have a letter on the texture based on its mode.

=== Items ===
'''[[File:Spectral Arrow (item) JE1.png|32px]] [[Minecraft:Spectral arrow]]s'''
* The tip is gold colored, but just in the item model.
* Show mob and player outlines in their respective team color when hit – even when invisible.
* Tag for entities to disable outlines. {{more info|please add corresponding tag here}}
* Tag to force outline: <code>{Glowing:1b}</code>.
* The glowing is a status effect.
* Crafted by surrounding an [[Minecraft:arrow]] with 4 [[Minecraft:glowstone dust]].
** Yields 2 spectral arrows.

'''{{Animate|Tipped Arrow JE1.png; Arrow of Night Vision JE1 BE1.png; Arrow of Invisibility JE1 BE1.png; Arrow of Leaping JE1 BE1.png; Arrow of Fire Resistance JE1 BE1.png; Arrow of Swiftness JE1 BE1.png; Arrow of Slowness JE1 BE1.png; Arrow of Water Breathing JE1 BE1.png; Arrow of Healing JE1 BE1.png; Arrow of Harming JE1 BE1.png; Arrow of Poison JE1 BE1.png; Arrow of Regeneration JE1 BE1.png; Arrow of Strength JE1 BE1.png; Arrow of Weakness JE1 BE1.png|32px}} [[Minecraft:Tipped arrow]]s'''
* Arrows tipped with potions.
** 14 new arrow types in total.
** Each differently tipped arrow is available in the Creative inventory, just like enchanted books.
** Corresponding effect is applied on hit.

'''[[File:Beetroot JE1 BE1.png|32px]] [[Minecraft:Beetroot]]s'''
* Restore {{hunger|1}}.
* Spawn naturally in villages.
* Can be used to craft [[Minecraft:beetroot soup]].
* Can also be used to craft [[Minecraft:rose red]] dye.

'''[[File: Beetroot Seeds JE1 BE1.png|32px]] [[Minecraft:Beetroot seeds]]'''
* Used to grow beetroot.

'''[[File:Beetroot Soup JE1 BE1.png|32px]] [[Minecraft:Beetroot soup]]'''
* Restores {{hunger|6}}.
* Crafted from 6 [[Minecraft:beetroot]]s and a [[Minecraft:bowl]].

'''[[File:Chorus Fruit JE1 BE1.png|32px]] [[Minecraft:Chorus fruit]]s'''
* Obtained from [[Minecraft:chorus plant]]s.
* Can be eaten even if the player is not hungry, similar to [[Minecraft:golden apple]]s.
** Teleports the player to a random nearby location when eaten (like an [[Minecraft:enderman]] or a [[Minecraft:shulker]]).
** Does not heal hunger points if the hunger bar is full.
*** Otherwise it heals {{hunger|4}}.
* Can be cooked in the [[Minecraft:furnace]] to obtain popped chorus fruits.

'''[[File:Popped Chorus Fruit JE1 BE1.png|32px]] [[Minecraft:Popped chorus fruit]]s'''
* Obtained from cooking [[Minecraft:chorus fruit]].
* Used to craft [[Minecraft:purpur block]]s.
* Cannot be eaten.

'''{{InvSprite|Shulker Spawn Egg Revision 1}} [[Minecraft:Shulker spawn egg]]s'''
* Used to spawn a [[Minecraft:shulker]].
* Purple with darker purple spots.

=== Mobs ===
'''General'''
* Mobs have a 5% chance to spawn left-handed, through the new <code>LeftHanded</code> boolean tag.
** Mobs able to hold items hold them according to their dominant hand.

'''[[File: Shulker.png|32px]] [[Minecraft:Shulker]]s'''
* Short for "''Shell Lurker''".
* Hostile mobs with the appearance of a purple block.
** Only spawn on the ground or at the walls of End cities when they first generate.
* When attacking, they open their shell with a spinning animation, revealing the creature inhabiting.
** The creature looks like a little white cube with big eyes.
** Its attack consists of shooting projectiles.
*** The projectiles chase the player until the projectile is out of range.
**** They can only move along one of the three grid axes at a time and on integer steps.
***** This means they can move only via [[Minecraft:taxicab distance|taxicab geometry.]]
*** Projectiles can be knocked away by attacking them.
*** Getting hit by a projectile causes 2 hearts of damage and inflicts the Levitation status effect.
*** They take more damage while their shell is open.
**** Their shells are considered armor, and bounce arrows off.
** It has an idle animation, where it opens its shells a little to peak through.
* Can be pushed by [[Minecraft:piston]]s, and can exist only on coordinates that are integers (except if they are on [[Minecraft:minecart]]s).
* Can teleport like an [[Minecraft:enderman]].
** Sometimes does this while being attacked or placed in unusual circumstances:
*** Removing its support block.
*** Pushing it into a non-air block (except piston heads).
*** Pushing a non-air block into its position (except piston heads).
* Is one of the few entities (apart from [[Minecraft:boat]]s and minecarts) that can be stood upon.
** It even displaces the player properly during its attacking and idle animations.

=== World generation ===
'''{{EnvLink|End City|End cities}}'''
* Generate on the new outer End islands.
* Dungeon-type structure fashioned like a branching tower made of [[Minecraft:End stone]] and many of the new blocks.
** Resemble a tree house.
* Generate with [[Minecraft:shulker]]s in it.

'''{{EnvLink|End Ship|End ships}}'''
* Can generate up in the air, right next to an End city.
** Always generate sailing away from what appears to be a pier.
** Composed of many of the same materials as the End city.
* Generate with [[Minecraft:shulker]]s in it.
* Have a [[Minecraft:beacon]] set to Speed, a [[Minecraft:brewing stand]] with [[Minecraft:potion]]s of Healing, and other loot.

'''[[File:Chorus plant.png|32px]] [[Minecraft:Chorus tree]]s'''
* Tree-like arrangements of the new [[Minecraft:chorus plant]] and [[Minecraft:chorus flower]] blocks.
* Generate on the outer End islands
* The whole structure is destroyed when the bottom-most block is destroyed, like [[Minecraft:cacti]].
* Can be farmed by planting the chorus fruit flowers that come from the top of the plants.
** Unlike cacti, chorus plants do not require the supporting block to be below it, but rather adjacent.
*** This allows the structure to grow around obstacles, like other plants.

'''[[File:End gateway JE1.png|32px]] [[Minecraft:End gateway]]s'''
* Small structures consisting of an [[Minecraft:End gateway block]] and two little bulbs of bedrock, at both the bottom and the top.
** Are an alternative way of traveling to the outer End islands, without having to build or fly all the way over there.
** Since the bulbs of bedrock only leave a one block slit on the horizontal plane, it is only accessible by throwing [[Minecraft:ender pearl]]s at it, or by riding [[Minecraft:pig]]s, [[Minecraft:boat]]s or [[Minecraft:minecart]]s.
*** The player is teleported to somewhere on the outer End islands.
*** The final location of the player depends on what angle they entered or at what angle the ender pearl was thrown at.
* One gateway is created for each dragon kill.
** Up to 20 gateways are possible to create this way.
** Gateways spawn in a radius around the End portal.
** Another gateway is created every time the player teleports to a new location.
*** The created gateway is linked to the original, so the player has a way back.

=== Command format ===
'''[[Minecraft:NBT format]]'''
* Added tags <code>HandItems</code>, <code>ArmorItems</code>, <code>HandDropChances</code>, and <code>ArmorDropChances</code> to <code>Living</code>.
* Added tags <code>HandItems</code> and <code>ArmorItems</code> to <code>ArmorStand</code>.
* Added tag <code>Glowing</code> to <code>Entity</code>.
* Added tag <code>Team</code> to <code>LivingBase</code>.
* Added tag <code>DragonPhase</code> to <code>EnderDragon</code>
* Added entity <code>Shulker</code>, child of <code>SnowMan</code>.
* Added entity <code>ShulkerBullet</code>, child of <code>Entity</code>.
* Added entity <code>DragonFireball</code>, which extends <code>FireballBase</code> and has no unique tags.
* Added entities <code>TippedArrow</code> and <code>SpectralArrow</code>, children of <code>Arrow</code>.
* Added block <code>EndGateway</code>, child of <code>TileEntity</code>.
* Added block <code>Structure</code>, child of <code>TileEntity</code>.
* Added item tag <code>Potion</code>, child of <code>tag</code>.

=== Gameplay ===
'''Dominant hand option'''
* An option for players to change their dominant hand on their player model.
** Under "Skin Customization".
* Changes the orientation of the offhand slot in the hotbar (left often suits right-hand players better and vice versa).

'''[[Minecraft:Dual wield]]ing'''
* Players can now use both hands at the same time to do different actions, with the left and right mouse buttons.
** For example, if a player has a pickaxe in their main hand and a torch in their other hand, right clicking places the torch.
*** This happens because a pickaxe lacks a right click use, and therefore the game tries to then treat the other item as if it's being right clicked.
*** The player cannot click both buttons at the same time.
** This is achieved through an extra inventory slot called the "offhand" slot.
*** Pressing {{key|F}} (by default) switches whatever item is selected in the hotbar with the item in the offhand (including no item).
*** The offhand slot is displayed next to the hotbar when it's not empty (left for right-hand players and vice versa).
**** It's also available in the [[Minecraft:inventory]] screen.
* Only the main hand can be used for attacking.
** Even bows can't be used in the offhand.
* [[Minecraft:Bow]]s can be used when something else is in the offhand.
** Arrows in the offhand take priority over arrows in the rest of the inventory slots.
* The offhand model is invisible in first person view, while it's empty.
* Some attributes and enchantments apply to the offhand item, while others do not.

'''[[Minecraft:Status effect]]s'''
* {{EffectLink|Levitation}}
** Received when the player is hit by [[Minecraft:shulker]] projectiles.
** Makes player involuntarily float high into the air.
*** Can be used to get to higher places.
** Listed as a negative effect, due to the potential to kill from fall damage.
** Higher levels of Levitation result in faster floating, except for the last two:
*** Level 255 does nothing.
*** Level 254 results in slow fall (similar to lunar gravity).

* {{EffectLink|Glowing}}
** Received when players or mobs are hit by [[Minecraft:spectral arrow]]s.
** Makes player's outline glow, seen even through non-transparent blocks.
*** The outline includes the models of the currently held items.
** Listed as a negative effect, because it prevents players from hiding from other players.
** It becomes colored differently if the player is part of a team, to match its team color.

== Changes ==
=== Blocks ===
'''[[Minecraft:Dead bush]]es'''
* Now drop anywhere between 0–2 [[Minecraft:stick]]s when broken without [[Minecraft:shears]].

'''[[Minecraft:Door]]s'''
* Changed the shading on acacia, birch, dark oak and jungle doors.

'''[[Minecraft:Fire]] '''
* The block states ''flip'' and ''alt'' were removed, and the integer state ''upper'' was reimplemented as the byte state ''up''.
** This reduced the number of states representing fire from 3072 to 512.

'''[[Minecraft:Glass pane]]s and [[Minecraft:iron bars]]'''
* Are now 2×2 pixels in footprint if no blocks connect to them.
** This is compared to the big cross configuration that was the default.

'''[[Minecraft:Pressure plate]]s'''
* Now have a slightly thinner item model.

'''[[Minecraft:Redstone wire]]'''
* Model was changed somewhat, resulting in subtle appearance differences.
** Before:<br>[[File:Inactive Redstone Wire (unconnected) JE1.png|32px]] [[File:Inactive Redstone Wire (NS) JE3.png|32px]] [[File:Inactive Redstone Wire (EW) JE3.png|32px]] [[File:Inactive Redstone Wire (NE) JE3.png|32px]] [[File:Inactive Redstone Wire (ES) JE3.png|32px]] [[File:Inactive Redstone Wire (SW) JE3.png|32px]] [[File:Inactive Redstone Wire (NW) JE3.png|32px]] [[File:Inactive Redstone Wire (NEW) JE3.png|32px]] [[File:Inactive Redstone Wire (NES) JE3.png|32px]] [[File:Inactive Redstone Wire (ESW) JE3.png|32px]] [[File:Inactive Redstone Wire (NSW) JE3.png|32px]] [[File:Inactive Redstone Wire (NESW) JE3.png|32px]]<br>[[File:Active Redstone Wire (unconnected) JE1.png|32px]] [[File:Active Redstone Wire (NS) JE3.png|32px]] [[File:Active Redstone Wire (EW) JE3.png|32px]] [[File:Active Redstone Wire (NE) JE3.png|32px]] [[File:Active Redstone Wire (ES) JE3.png|32px]] [[File:Active Redstone Wire (SW) JE3.png|32px]] [[File:Active Redstone Wire (NW) JE3.png|32px]] [[File:Active Redstone Wire (NEW) JE3.png|32px]] [[File:Active Redstone Wire (NES) JE3.png|32px]] [[File:Active Redstone Wire (ESW) JE3.png|32px]] [[File:Active Redstone Wire (NSW) JE3.png|32px]] [[File:Active Redstone Wire (NESW) JE3.png|32px]]
** After:<br>[[File:Inactive Redstone Wire (unconnected) JE2.png|32px]] [[File:Inactive Redstone Wire (NS) JE4.png|32px]] [[File:Inactive Redstone Wire (EW) JE4.png|32px]] [[File:Inactive Redstone Wire (NE) JE4.png|32px]] [[File:Inactive Redstone Wire (ES) JE4.png|32px]] [[File:Inactive Redstone Wire (SW) JE4.png|32px]] [[File:Inactive Redstone Wire (NW) JE4.png|32px]] [[File:Inactive Redstone Wire (NEW) JE4.png|32px]] [[File:Inactive Redstone Wire (NES) JE4.png|32px]] [[File:Inactive Redstone Wire (ESW) JE4.png|32px]] [[File:Inactive Redstone Wire (NSW) JE4.png|32px]] [[File:Inactive Redstone Wire (NESW) JE4.png|32px]]<br>[[File:Active Redstone Wire (unconnected) JE2.png|32px]][[File:Active Redstone Wire (NS) JE4.png|32px]] [[File:Active Redstone Wire (EW) JE4.png|32px]] [[File:Active Redstone Wire (NE) JE4.png|32px]] [[File:Active Redstone Wire (ES) JE4.png|32px]] [[File:Active Redstone Wire (SW) JE4.png|32px]] [[File:Active Redstone Wire (NW) JE4.png|32px]] [[File:Active Redstone Wire (NEW) JE4.png|32px]] [[File:Active Redstone Wire (NES) JE4.png|32px]] [[File:Active Redstone Wire (ESW) JE4.png|32px]] [[File:Active Redstone Wire (NSW) JE4.png|32px]] [[File:Active Redstone Wire (NESW) JE4.png|32px]]

'''[[Minecraft:Stairs]]'''
* Are now rotated 90° in the inventory.

'''[[Minecraft:Trapdoor]]s'''
* No longer require supporting blocks.
** Therefore they can be moved by [[Minecraft:piston]]s freely.
* An open trapdoor may be climbed like a [[Minecraft:ladder]] if it is directly above one and on the same side of the block.

=== Items ===
'''[[Minecraft:Bow]]s'''
* The bow in the hotbar now shows an animation for drawing back an [[Minecraft:arrow]].
* Arrows in the off hand are prioritized over arrows in the rest of the [[Minecraft:inventory]] slots.

'''[[Minecraft:Ender pearl]]s'''
* Can now be thrown in [[Minecraft:Creative]] mode.

'''[[Minecraft:Fishing rod]]s'''
* Casting fishing rods now has an animation in the hotbar/inventory.

'''Item models for chest-like blocks'''
* Unlike other blocks, [[Minecraft:chest]]s, [[Minecraft:trapped chest]]s and [[Minecraft:ender chest]]s have their item model rotated, to have the front face in view of the player.
** This made it easier to distinguish between trapped and regular chests while being held, since only their front face is different.

'''[[Minecraft:Map]]s'''
* Now display as a mini map when held in the off hand, or if the offhand slot is occupied.
** The (old) large version is visible only when held in the dominant hand with both hands-free.

'''[[Minecraft:Potion]]s'''
* Mixed potions' colors now blend.
* Numeric IDs are no longer used. Instead, a "Potion" tag is used.
** e.g. {{cmd|give @s minecraft:potion 1 0 {Potion:"minecraft:swiftness"} }}
* Splash potions now have a separate data value and ID name and can be created from all potions, including water bottles.
* Added Mundane, Thick and Awkward potions to the Creative inventory.
* [[Minecraft:Glowstone dust]] or [[Minecraft:redstone]] can no longer be added to extended or tier-II potions, respectively.
* Most recipes for [[Minecraft:potion of Weakness]] were removed; only brewing from a [[Minecraft:water bottle]] remains.
* [[Minecraft:Potion of Slowness]] can no longer be brewed from a [[Minecraft:potion of Fire Resistance]].
* [[Minecraft:Potion of Harming]] can no longer be brewed from a [[Minecraft:potion of Water Breathing]].
* Splash potions now have the same duration as drinkable potions.<ref>{{bug|MC-85891}}</ref>

=== Mobs ===
'''[[Minecraft:Chicken]]s'''
* Can be led and bred with [[Minecraft:melon seeds]], [[Minecraft:pumpkin seeds]], and [[Minecraft:beetroot seeds]], in addition to regular [[Minecraft:wheat seeds|seeds]].

'''[[Minecraft:Ender dragon]]s'''
* Similar to the one on [[Minecraft:Legacy Console Edition]].
* The dragon can be re-spawned indefinitely by creating a creeper face configuration out of [[Minecraft:clay]] in [[Minecraft:the End]].
** Subsequent dragons spawn new gateways, but don't drop [[Minecraft:XP]] or create new [[Minecraft:dragon egg]]s.
* The dragon AI and attacks has been changed:
** Breathes fire/purple particles on players and mobs, while on top of the portal.
** Drops fireballs on top of the player.
** Defends the obsidian pillars more, the further the fight progresses.
* The dragon flies and stops over the portal sometimes, only then can the last blow be dealt.

'''[[Minecraft:Endermen]]'''
* Remain aggravated towards the player despite being in contact with [[Minecraft:water]].
* Drop the block they were holding when killed.

'''[[Minecraft:Pig]]s'''
* Can be led and bred with [[Minecraft:potato]]es and [[Minecraft:beetroot]]s, in addition to [[Minecraft:carrot]]s.

'''[[Minecraft:Skeleton]]s'''
* Have an animation for lifting up and drawing back their [[Minecraft:bow]].

'''[[Minecraft:Villager]]s'''
* Farmer villagers now harvest beetroot.

=== Non-mob entities ===
'''[[Minecraft:Armor stand]]s'''
* Can now be summoned to dual wield with commands in Creative.

'''Projectiles'''
* Slightly altered the path of projectiles.<ref>https://www.reddit.com/r/Minecraft/comments/3f7m2y/minecraft_snowball_projectile_changes_snapshot/</ref>

=== World generation ===
'''[[Minecraft:The End]]'''
* A set amount of differently-sized obsidian pillars are arranged in a circular fashion.
** The tallest pillars have [[Minecraft:iron bar]]s around their [[Minecraft:ender crystal]] to deflect projectiles.
* The exit portal is pre-generated at the center of the island, but without the [[Minecraft:dragon egg]] and [[Minecraft:End portal (block)|portal blocks]].
* Now generates a great amount of islands in every direction from the main island, though separated from it in all directions by an empty gap of about 1,000 blocks.
** Mini islands generate between the center and main islands.
** End islands and mini End islands have chorus trees spread throughout them.

'''[[Minecraft:The Nether]]'''
* Removed the [[Minecraft:fog]] in the Nether.

'''[[Minecraft:Village]]s'''
* Farms now include [[Minecraft:beetroot]] crops.

=== Command format ===
'''NBT format'''
* Tag <code>Equipment</code> (under <code>Living</code>) has become deprecated.
* Tag <code>DropChances</code> (under <code>Living</code>) has become deprecated.

=== Gameplay ===
'''Crosshair'''
* No longer shows the crosshair in 3rd person view.

'''[[Minecraft:Inventory]]'''
* Rearranged the Survival inventory and the Creative "Survival tab" to accommodate for the new offhand slot.
* Unified the orientation of many items in the inventory.

'''[[Minecraft:Status effect]]s'''
* Status effects icons are now displayed on the HUD on the right hand corner, instead of just in the inventory (similar to [[Minecraft:Pocket Edition]]).
** They are ordered by the time of infliction from right to left.
** Positive effects are on the top row and negative effects on the bottom row.
** Effects that are about to run out, blink.
*** They blink faster when they are closer to running out and start fading away.

=== General ===
'''Attributes'''
* <code>CustomNameVisible:true</code> makes the name tag on mobs show in the same way as on players.
* Entities can now be summoned straight to teams: <code>{team="TeamName"}</code>.
* <code>DropChances</code> and <code>Equipment</code> tags are no longer used.
** <code>ArmorItems</code>, <code>HandItems</code>, <code>ArmorDropChances</code> and <code>HandDropChances</code> are used instead.

'''[[Minecraft:Boss]]es'''
* Proper support for multiple bosses' health bars, so they show at the same time without obstructing each other.

'''Damage tooltips'''
* Items can damage differently based on where they are placed to (main hand, offhand, armor slots).

'''[[Minecraft:Death messages]]'''
* Death messages now are displayed on the player's death screen as well as in the chat.

'''[[Minecraft:Models]]'''
* Different models/textures can be used for each different damage values, item states, and whether the item is held in a different hand.
** This works on compasses, clocks, and anything that can have a durability bar.
** It also contains additional tags for bows and fishing rods.
* Models can be put together based on block state attributes, such as fences.
** As a result, the vanilla set of block models was reduced by almost 300.
* Block model JSON is now strict: comments and quote-less identifiers are not allowed.
* <code>display</code> tag defaults have changed, and the <code>thirdperson</code> and <code>firstperson</code> tags were replaced with <code>thirdperson_righthand</code>, <code>thirdperson_lefthand</code>, <code>firstperson_righthand</code>, and <code>firstperson_lefthand</code>.
* <code>parent</code> and <code>elements</code> tags can coexist now, though the top level elements tag overwrites all former ones.
* UV is now optional, and if not supplied it automatically generates based on the element's position.

'''[[Minecraft:Options]]'''
* Removed the ''Broadcast Settings'' section, as well as Twitch integration as a whole.
* Removed ''Super Secret Settings'' and ''Alternate Blocks'' from video settings.

'''[[Minecraft:Resource pack]]s'''
{{Resource pack format/value|2}}
* Older resource packs require user acknowledgment to use.

'''Structure data'''
* Now comes from <code>/assets/structures</code>.

== Fixes ==
{{fixes|fixedin=15w31a|prefix=Minecraft
|;old
|438|Ender pearl can't be used in creative mode.
|1537|Sometimes doors in strongholds are misplaced.
|1663|Dying while having a GUI window open doesn't make the death screen appear.
|1956|Arms misplaced in skeletons with a bow.
|2768|Ladder bug with trapdoors.
|4474|Boss health bar temporarily viewable after respawn and loading another world.
|42841|Incorrect Creative instant health damage value.
|47526|Ender Crystal entity spawning 1 block too low.
|5404|Name Tags/XP Orbs/Splash Potions are angled in third-person mode.
|56268|Breaking the bedrock below an ender crystal (in the End) creates performance drops, rapidly flickering light.
|68062|Boss health bar only visible when looking at boss.
|69320|Data tag output by {{cmd|entitydata}} and {{cmd|blockdata}} contains too many commas.
|75082|End music will stop every time the ender dragon loads out of view.
}}</onlyinclude>

== Videos ==
{{slicedlime|KkDVBM8l0-M}}

== Trivia ==
* Before [[Minecraft:18w43a]], 15w31a holds the record as having the most content in one developmental release, having nearly twice as much content as [[Minecraft:Java Edition 1.4.2]] had in October 2012.
** The previous record was held by [[Minecraft:13w36a]] for [[Minecraft:Java Edition 1.7.2]].
* 15w31a was previously removed from the [[Minecraft:launcher]] for some time, but was added back in September 2018.

== Footnotes ==
{{notelist}}

== References ==
{{reflist}}

== Navigation ==
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