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← Older revision		Revision as of 11:05, 8 June 2026
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	== Changes ==		== Changes ==
	=== Blocks ===		=== Blocks ===

			'''[[File:End Gateway JE3.gif\|32px]] [[Minecraft:End Gateway (block)\|End gateway block]]'''
			* Colour palette has been adjusted.

			'''[[File:End Portal JE4.gif\|32px]] [[Minecraft:End Portal (block)\|End portal block]]'''
			* Colour palette has been adjusted.

	'''[[Minecraft:End stone brick]]s'''		'''[[Minecraft:End stone brick]]s'''
	* Are no longer craftable.		* Are no longer craftable.

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{{log4j vulnerability|dev=true}}
{{Infobox version
|title=Minecraft 16w20a
|edition=Java
|image=16w20a.png
|image2=Java Edition 16w20a.png
|type=Snapshot
|date=May 18, 2016
|parent=1.10
|jsonhash=a1958213b24176f0cd6698929ae965caec5eb53f
|clienthash=73de5728b610cf31bcc9c497447856374893249d
|serverhash=2cbcbd735cb48c8cc2bebb7b43c8afa69a923269
|prevparent=1.9.4
|next=16w21a
|nextparent=1.10.1
}}
<onlyinclude>
'''16w20a''' is the first [[Minecraft:snapshot]] for [[Minecraft:Java Edition 1.10]], released on May 18, 2016,<ref name="16w20a-blog">https://web.archive.org/web/20161201000000*/http://www.mojang.com/2016/05/minecraft-snapshot-16w20a/</ref> which adds [[Minecraft:Bone Block|bone]], [[Minecraft:Magma Block|magma]], and [[Minecraft:Nether wart block]]s; [[Minecraft:husk]]s and [[Minecraft:stray]]s as [[Minecraft:zombie]] and [[Minecraft:skeleton]] variants, respectively; [[Minecraft:polar bear]]s; and [[Minecraft:fossil]]s that spawn underground.

== Additions ==
=== Blocks ===
'''[[File:Bone Block (UD) JE1 BE1.png|32px]] [[Minecraft:Bone block]]s'''
* Crafted by filling a 3×3 square in the crafting table with [[Minecraft:bone meal]].
** Can be crafted back into 9 bone meal.
* Found underground in [[Minecraft:desert]] and [[Minecraft:swamp]]s as part of [[Minecraft:fossil]]s.

'''[[File:Magma Block JE1.gif|32px]] [[Minecraft:Magma block]]s'''
* Found in the [[Minecraft:Nether]], generating 4 blobs per chunk between Y=27 and Y=36.
** It has a similar frequency to blocks like [[Minecraft:andesite]] in the [[Minecraft:Overworld]].
* Crafted using four [[Minecraft:magma cream]].
* [[Minecraft:Mob]]s and [[Minecraft:player]]s take {{hp|1}} damage every second while touching it, similar to a [[Minecraft:cactus]].
** Unlike cactus or [[Minecraft:fire]], this block doesn't destroy items that touch it.
* If the player is sneaking, wearing [[Minecraft:Frost Walker]]–enchanted [[Minecraft:armor]], or under the {{EffectLink|Fire Resistance}} effect, it does not take damage.
* If the player dies by standing on it, a new death message appears: "''player'' discovered that floor was lava".
** If the player dies by the block, but after being damaged by a mob or player, the death message is: "''player'' walked into danger zone due to ''entity''".
* Removes water blocks on top when [[Minecraft:random tick|randomly ticked]].
* It produces smoke [[Minecraft:particles]] under the [[Minecraft:rain]].
* It emits as much [[Minecraft:light]] as it receives from other sources.
** e.g. A magma block next to a torch emits light at level 13, as that was the light level it received from the torch.
*** If the [[Minecraft:torch]] is removed, magma block searches for the next brightest source of light; if no source is found then it doesn't produce light.

'''[[File:Nether Wart Block JE1.png|32px]] [[Minecraft:Nether wart block]]s'''
* Crafted by filling a 3×3 square in the crafting table with [[Minecraft:Nether wart]].
** It cannot be crafted back into Nether wart.
* It is broken by flowing [[Minecraft:water]] or [[Minecraft:lava]], like most plants are.

'''[[File:Red Nether Bricks JE1 BE1.png|32px]] [[Minecraft:Red Nether brick]]s'''
* Crafted by placing a 2×2 checkerboard of 2 [[Minecraft:Nether brick]] and 2 [[Minecraft:Nether wart]].

'''[[File:Structure Void (item) JE1.png|32px]] [[Minecraft:Structure void]]s'''
* Used for the structure block to keep the blocks in that location.
** Intended to be a replacement for the function [[Minecraft:barrier]] blocks used to convey, so they can form part of the structure itself.
* They are invisible and have a small hitbox.
** They are only visible when using the feature in (save) structure void.
* Allows for empty spaces in a structure.
** Unlike air, it doesn't overwrite blocks where it is loaded.
** Example: If the player loads a 2-block-high structure with air at the top and a structure void at the bottom into a 2-block-high area of stone, the top block becomes air but the bottom stays stone.

=== Items ===
'''[[Minecraft:Spawn egg]]s'''
* [[File:Cat Spawn Egg JE1.png|32px]] [[Minecraft:Cat]] spawn egg
* [[File:Donkey Spawn Egg JE1 BE1.png|32px]] [[Minecraft:Donkey]] spawn egg
* [[File:Elder Guardian Spawn Egg JE1 BE1.png|32px]] [[Minecraft:Elder guardian]] spawn egg
* [[File:Husk Spawn Egg JE1 BE2.png|32px]] [[Minecraft:Husk]] spawn egg
* [[File:Mule Spawn Egg JE1 BE1.png|32px]] [[Minecraft:Mule]] spawn egg
* [[File:Polar Bear Spawn Egg JE1 BE1.png|32px]] [[Minecraft:Polar bear]] spawn egg
* [[File:Skeleton Horse Spawn Egg JE1 BE1.png|32px]] [[Minecraft:Skeleton horse]] spawn egg
* [[File:Stray Spawn Egg JE1 BE2.png|32px]] [[Minecraft:Stray]] spawn egg
* [[File:Wither Skeleton Spawn Egg JE1 BE1.png|32px]] [[Minecraft:Wither skeleton]] spawn egg
* [[File:Zombie Horse Spawn Egg JE1 BE2.png|32px]] [[Minecraft:Zombie horse]] spawn egg

=== Mobs ===
'''[[File:Husk JE1 BE1.png|32px]] [[Minecraft:Husk]]s'''
* 80% of zombies spawned above ground in [[Minecraft:desert]] biomes, and their variants, are husks.
** All spawns where the zombie does not have a view of the sky are normal zombies or zombie villagers.
* Behaves mostly like a regular zombie.
* Its <code>ZombieType</code> tag is 6.
* Does not burn in sunlight.
* Can spawn as a baby or as a chicken jockey.
* Applies 7 seconds of {{EffectLink|Hunger|link=Hunger (effect)}} when attacking in Easy, 14 in Normal, and 21 in Hard difficulty.
* Visually 2 pixels taller than zombies, but has the same hitbox.

'''[[File:Polar Bear JE1 BE1.png|32px]] [[Minecraft:Polar bear]]s'''
* Adults and cubs spawn randomly as passive mobs in [[Minecraft:ice plains]], [[Minecraft:ice mountains]], and [[Minecraft:ice plains spikes]].
* When hit, the adults attack the player, the cubs run away (very fast, similar to baby zombies).
** Additionally, adults always attack the player when their cubs are around.
* Can swim faster in water than the player.
* Cubs follow their parents.
* Drops 0–2 [[Minecraft:raw fish]] (75% chance) or 0–2 [[Minecraft:salmon]] (25% chance), each increased by 1 per level of [[Minecraft:Looting]].

'''[[File:Stray JE1 BE3.png|32px]] [[Minecraft:Stray]]'''
* 80% of skeletons spawned above ground in [[Minecraft:ice plains]] biomes, and their variants, are strays.
** All spawns where the skeleton does not have a view of the sky are normal skeletons.
** Spiders spawned in cold biomes have a chance of having a stray riding it.
* Acts mostly like a regular skeleton.
* Its <code>SkeletonType</code> tag is 2.
* Drops are the same as skeletons, but also have a 50% chance to drop 0-1 tipped arrow of {{EffectLink|Slowness}} when killed by the player. With Looting, chance increases to {{frac|2×level+1|2×level+2}}.
* Shoots tipped arrows of Slowness (0:30) at the target.

=== World generation ===
'''{{EnvLink|Fossil}}'''
* Generates 15–24 blocks underground in [[Minecraft:desert]]s, [[Minecraft:swampland]]s, and their variants. Each chunk has a {{frac|1|64}} chance of generating a fossil.
* Composed of [[Minecraft:bone block]]s and some [[Minecraft:coal ore]], arranged as to resemble the skulls and spines of giant extinct creatures.
** There are 4 variants of the skull, and 4 variants of the spine sections.

=== Command format ===
'''[[Minecraft:NBT format]]'''
* {{nbt|int|ZombieType}}: Determines the kind of [[Minecraft:zombie]] a specific zombie is.
** 0: default, 1-5: villager, 6: [[Minecraft:husk]].
** This tag, in effect, unifies the characteristics of being a zombie, a specific zombie villager and a husk into a single variable.
** Intended to replace the {{nbt|byte|IsVillager}} and {{nbt|int|VillagerProfession}} tags.
*** These tags are kept for backward compatibility, but no newly generated entities have them.

'''[[Minecraft:Sound events]]'''
* Added <code>block.enchantment_table.use</code>.
* Added <code>entity.polar_bear.ambient</code>.
* Added <code>entity.polar_bear.baby_ambient</code>.
* Added <code>entity.polar_bear.death</code>.
* Added <code>entity.polar_bear.hurt</code>.
* Added <code>entity.polar_bear.step</code>.
* Added <code>entity.polar_bear.warning</code>.

=== General ===
'''[[Minecraft:Debug screen]]'''
* {{key|F3+G}} toggles the visibility of [[Minecraft:chunk]] borders around the player.
** Shows a blue outline for the chunk the player is currently in and a yellow outline for individual [[Minecraft:air]] blocks in the vicinity of the chunk.
*** The blue outline in particular, outlines the chunk horizontally on top of the solid blocks on the ground.
*** The outlines extends arbitrarily up, but ends at [[Minecraft:bedrock]] level.

'''[[Minecraft:Loot table]]s'''
* A new tag <code>limit</code> for the <code>looting_enchant</code> function.
** It determines the maximum amount of mob drops the player can expect to receive when using the Looting enchantment of any level.

'''[[Minecraft:Options]]'''
* A new 'Auto-jump' toggle has been added, which automatically makes the player jump when running towards a one block tall obstacle.
** Enabled by default, can be disabled in [[Minecraft:Options]].

'''[[Minecraft:Particle]]s'''
* A new <code>fallingdust</code> particle has been added.
** Appears underneath gravity-affected blocks that are generated or placed suspended in midair.
** Does not apply to [[Minecraft:dragon egg]]s.

== Changes ==
=== Blocks ===
'''[[Minecraft:End stone brick]]s'''
* Are no longer craftable.

'''[[Minecraft:Structure block]]s'''
* Are now available in item form; can be given or summoned.
** Similarly to [[Minecraft:command block]]s, its placement, destruction, and modification are restricted to opped players in [[Minecraft:Creative]].
* Now comes with an integrated GUI and new textures.
* Has four modes:
** {{BlockSprite|Structure block save}} '''Save''' - build structure in world, tell the block where it is and it saves it to file.
** {{BlockSprite|Structure block load}} '''Load''' - loads saved structure files, replacing blocks with saved blocks except for [[Minecraft:structure void]] blocks.
** {{BlockSprite|Structure block corner}} '''Corner''' - for automatic size calculation.
** {{BlockSprite|Structure block data}} '''Data''' - for chest markers and other blocks that require data (default).
* Structures are limited to a size of 32 blocks in each direction.
* The coordinates used by the blocks are relative to themselves.
* When in use, it shows the outline of the structure it relates to in white.
* Can rotate and mirror structures before they are placed.
* Small red and blue cubes can be displayed in the selection area.
** Blue is for air blocks, red is for [[Minecraft:structure void]] blocks.
* Save and Load structure blocks can be activated by [[Minecraft:redstone]].
* The game protects against maps saving arbitrarily massive amounts of data to disk.
* Display a name tag above them indicating their mode and structure name.
* New tags:
** <code>powered</code>: Whether or not the structure block is currently being powered with redstone.
** <code>showboundingbox</code>: Whether or not the bounding box of the structure is being outlined.
** <code>showair</code>: Whether or not air blocks are indicated within the structure.

=== Items ===
'''[[Minecraft:Firework rocket]]s'''
* Recipe now produces three rockets rather than only one.

=== Mobs ===
'''[[Minecraft:Endermen]]'''
* Can now rarely spawn in the Nether with a {{frac|1|153}} rate.
** Compared to {{frac|100|153}} for zombie pigmen.
* Can now naturally pick up [[Minecraft:netherrack]].

'''[[Minecraft:Magma cube]]s'''
* Spawn about twice as often in the Nether.
** The rate is now {{frac|2|153}}, compared to {{frac|1|151}} before.

'''[[Minecraft:Zombie]]s'''
* The "Zombie Generic Villager" is removed, due to the new <code>zombietype</code> tag.

=== World generation ===
'''[[Minecraft:Cave]]s'''
* No longer turn adjacent [[Minecraft:sand]] blocks in the ceiling into [[Minecraft:sandstone]] when generating.

'''[[Minecraft:Ice plains]] and variants '''
* Don't spawn any other passive mobs than [[Minecraft:rabbit]]s and the new [[Minecraft:polar bear]]s anymore.
* Also have a lower chance of spawning passive mobs during world generation than other biomes (7% versus 10%).

'''[[Minecraft:Mesa]]s and variants'''
* [[Minecraft:Terracotta]] and the dyed forms of terracotta no longer generate more than 15 blocks deep, if the mesa is more than 15 blocks above sea level.
* In addition to the normal 2 blobs of [[Minecraft:gold ore]] below Y=32, attempts to generate 20 blobs between Y=32 and Y=79.
* Generate the new type of [[Minecraft:mineshaft]]s, described below.

'''[[Minecraft:Mineshaft]]s'''
* New mineshaft type that generates in mesa biomes (including all variants).
** Placed so that the midpoint of the structure is near sea level, rather than so that the top is 10 blocks or more below sea level.
** Uses dark oak wood for wooden structures.
** New tag <code>MST</code> on mineshaft structure pieces to indicate the type. 0 is the traditional mineshaft, 1 is the new mesa mineshaft.
* Features generate differently if above ground (i.e. the sky light where they generate is 8 or more). This is not dependent on mineshaft type.
** Cave spider spawners no longer generate if sky light is 8 or more.
** Various wooden pieces no longer generate if the block above is air and/or if sky light is 8 or more.
** Rails in corridors are more complete if sky light is below 8.
*** 90%, versus 70% in 1.9 and in above-ground corridors.

'''[[Minecraft:Plains]] and [[Minecraft:sunflower plains]]'''
* Now have some trees in 5% of its chunks ({{frac|1|3}} large oaks, {{frac|2|3}} normal oaks).

'''[[Minecraft:Village]]s'''
* Village structures are no longer restricted by [[Minecraft:biome]] boundaries.
** Meaning that a village that starts in a valid biome can now spread into an adjacent invalid biome.
* Now generate in taigas (but not variants).
** They are made with spruce [[Minecraft:log]].
* Savanna villages are now made with acacia wood instead of oak.
** In savannas, acacia logs replace cobblestone in all structures except churches.
* Paths no longer generate below sea level, and in non-desert villages they are made with different material depending on the existing terrain.
** If replacing [[Minecraft:grass block]]s, the path is made from [[Minecraft:grass path]] blocks.
** If replacing [[Minecraft:water]] or [[Minecraft:lava]], the path is made from [[Minecraft:planks]].
** Otherwise, the path is gravel on top of cobblestone (including bridges across ravines).
** Sandstone paths still always generate in [[Minecraft:desert]] villages.
* They have a 2% chance of being a zombie village, determined by <code>Zombie</code> tag in <code>Village.dat</code>.
** All generated villagers are instead [[Minecraft:zombie villager]]s.
** There are no [[Minecraft:door]]s or [[Minecraft:torch]]es in the village.

=== Command format ===
'''NBT format'''
* <code>NoGravity</code> now works for all [[Minecraft:entities]], not only [[Minecraft:armor stand]]s.
** A mob in midair affected by it, still responds to knockback by moving horizontally.
*** Although the AI doesn't permit any mob to move on their own, [[Minecraft:horse]]s and [[Minecraft:pig]]s ridden by the player move normally.
**** Very similarly, [[Minecraft:boat]]s in the [[Minecraft:air]] ridden by the player move as if they were in [[Minecraft:water]].

=== Gameplay ===
'''[[Minecraft:Huge mushroom]]s'''
* Huge mushrooms have a {{frac|1|12}} chance of generating twice as tall as normal.
** These new mushrooms, which can be up to 13 blocks tall, can appear during world generation or by being planted by the player.

== Fixes ==
{{fixes|fixedin=16w20a|prefix=Minecraft
|;old
|44579|Cannot summon green-robed villager, even though its zombie counterpart works.
|87739|{{cmd|setblock}} with signs missing {{cd|Text}} tags kicks all players loading the sign.
|89848|{{cmd|playsound}}/sound engine pitch algorithm isn't working properly.
|98779|Skeletons spawned with {{cmd|summon}} or natural spawning algorithm are not in the correct height.
}}

'''More fixes'''
* Fixed some broken uses of relative coordinates.<ref name="16w20a-blog"/>
</onlyinclude>

== Videos ==
{{slicedlime|pOtue0qWMwg}}

== Trivia ==
* 16w20a was previously removed from the [[Minecraft:launcher]] for some time, but was added back in September 2018.
* This snapshot was released on the same day as [[Minecraft:Pocket Edition v0.14.3 alpha]].

== References ==
{{reflist}}

== Navigation ==
{{Navbox Java Edition versions|1.1x}}

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