View source for Minecraft:Java Edition 1.18 Experimental Snapshot 1

{{log4j vulnerability|dev=true}}
{{Infobox version
|title=Minecraft 1.18 Experimental Snapshot 1
|image=1.18 Experimental Snapshot 1 banner.jpg
|image2=1.18 Experimental Snapshot 1 reddit.png
|image3=Java Edition 1.18 Experimental Snapshot 1 menu.png
|edition=Java
|type=Experimental snapshot
|date=July 13, 2021
|jsondl={{dl|231bba2a21e18b8c60976e1f6110c053b7b93226|custom|name=1_18_experimental-snapshot-1.zip|title=.json}}{{fn|Unzip this file in the <samp>[[Minecraft:.minecraft]]/versions</samp> folder.}}
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|serverhash=83a3c2e94b744ad8f0c8bc373dd70a85da59babf
|servermap=3842b0e3eef95054f464d5de410f774ecead9f0f
|parent=1.18
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'''1.18 Experimental Snapshot 1''' (known as '''1_18_experimental-snapshot-1''' in the launcher) is the first [[Minecraft:experimental snapshot]] for [[Minecraft:Java Edition 1.18]], released on July 13, 2021,<ref name="article_1.18_experimetal_snapshot_1">{{Mcnet|new-world-generation-java-available-testing|New world generation in Java available for testing|July 13, 2021|Henrik Kniberg}}</ref> which introduces new terrain generation and enables features from the [[Minecraft:Caves and Cliffs Preview Data Pack|preview data pack]]. This version is a fork of [[Minecraft:Java Edition 1.17.1 Pre-release 1|1.17.1 Pre-release 1]]. This is the first experimental snapshot released in 2021.

== Additions ==
=== World generation ===
'''{{EnvLink|Cave|text=Caves}}'''
* Completely overhauled.
* Now stretch down to Y=-59.
* The cavern now generates in 2 layers of different stone bases depending on the depth.
** Cavern layer above Y=0 is made up of regular [[Minecraft:stone]].
** Stone transitions to [[Minecraft:deepslate]] from Y=0 to Y=-7.
** Deepslate now completely replaces stone from Y=-8 to [[Minecraft:bedrock]].
*** Certain types of ores and structures still generate in the deepslate layer, as well as [[Minecraft:tuff]].
*** [[Minecraft:Dirt]], [[Minecraft:diorite]], [[Minecraft:granite]] and [[Minecraft:andesite]] do not generate in this layer.
* Contain [[Minecraft:aquifers]], bodies of [[Minecraft:water]] with different heights, independent of sea level (Y=63).
** Aquifers below Y=0 sometimes generate with lava instead of water.<ref name="21w16a">{{snap|21w16a|April 21, 2021}}</ref>
* Improved old caves, adding more variation.<ref>{{tweet|henrikkniberg|1364649861761630209|Oh forgot to mention in the changelog* we also added some more variation to the old cave carvers (width, heigh, floor cutoff, etc). Just to make them blend in a bit better with the noise caves instead of being instantly recognizable.|February 25, 2021}}</ref>
* New noise caves, coming in 3 forms: cheese, spaghetti, and noodle.
** The original caves still exist with their generation slightly tweaked to better blend in with noise caves.
** Cheese caves have large stone towers stretching from the bottom of the cave to the top.
*** Very large, often large enough to fly with [[Minecraft:elytra]].
*** Abundant with [[Minecraft:spring]]s, aquifers and [[Minecraft:ore]]s.
** Spaghetti caves are long, thin caves that have small aquifers and are more similar to original caves.
** Noodle caves are thinner, squigglier and more claustrophobic variants of spaghetti caves.

'''{{EnvLink|Mountain|text=Mountains}}'''
* Come in 5 sub-biomes:
** {{BiomeLink|Meadow}}
*** A flat but elevated biome that looks like a flowery and colder [[Minecraft:plains]], with an aqua [[Minecraft:grass]] color and dark blue water color.
*** Generates in plateaus and the lowest layers of some mountains, usually near plains and other temperate biomes.
*** Contains [[Minecraft:grass]], [[Minecraft:tall grass]], [[Minecraft:dandelion]]s, [[Minecraft:azure bluet]]s, [[Minecraft:cornflower]]s, [[Minecraft:blue orchid]]s, [[Minecraft:poppies]], [[Minecraft:oxeye daisies]] and [[Minecraft:allium]]s.
*** Only [[Minecraft:rabbit]]s and [[Minecraft:donkey]]s spawn in this biome.
** {{BiomeLink|Grove}}
*** Reminiscent of a [[Minecraft:snowy taiga]] with snow blocks instead of [[Minecraft:grass block]]s.
*** Generates in the slopes of a snowy mountain when next to forested biomes.
*** Covered in [[Minecraft:snow]], [[Minecraft:snow block]]s, [[Minecraft:powder snow]] and is filled with [[Minecraft:spruce tree]]s.
*** Rabbits, [[Minecraft:wolves]], [[Minecraft:fox]]es, [[Minecraft:sheep]], [[Minecraft:pig]]s, [[Minecraft:chicken]]s and [[Minecraft:cow]]s spawn in this biome.
** {{BiomeLink|Snowy Slopes}}
*** Generates in the slopes of a mountain when next to plains and snowy tundras.
*** Covered in snow layers, snow blocks, powder snow and [[Minecraft:ice]].
*** Only rabbits and [[Minecraft:goat]]s spawn in this biome.
** {{BiomeLink|Jagged Peaks|text=Lofty Peaks}}
*** One of the biomes that generate in the mountain peaks.
*** Covered in snow, snow blocks and [[Minecraft:ice]].
*** Only goats spawn in this biome.
** {{BiomeLink|Frozen Peaks|text=Snowcapped Peaks}}
*** One of the biomes that generate in the mountain peaks.
*** Generates if the surrounding biomes are too cold for lofty peaks.
*** Covered in snow, snow blocks, ice, and [[Minecraft:packed ice]].
*** Only goats spawn in this biome.

'''{{EnvLink|Ore Vein|text=Ore Veins}}'''
* Long and rare [[Minecraft:ore]] formations.
* [[Minecraft:Copper ore]] veins mixed with [[Minecraft:granite]] and [[Minecraft:raw copper block]] generate above Y=0.
* [[Minecraft:Iron ore]] veins mixed with [[Minecraft:tuff]] and [[Minecraft:raw iron block]] generate below Y=0.

=== Technical ===
'''[[Minecraft:Debug screen]]'''
* Added two new lines: "Multinoise" and "Terrain".
** Only appear if the dimension where the player is uses the multi-noise biome source type.
** Multinoise lists the parameters used at the player's position in order to place a biome. C is continentalness, E is erosion, T is temperature, H is humidity and W is weirdness.
** Terrain lists values related to terrain generation.{{Info needed}}

== Changes ==
=== Blocks ===
'''[[Minecraft:Sculk sensor]]'''
* Have been re-added to [[Minecraft:Creative inventory]].

'''[[Minecraft:Snow block]]'''
* Plants can now be placed on snow blocks.

=== Items ===
'''[[Minecraft:Bundle]]'''
* Have been re-added to Creative inventory.
* Can once again be crafted.

=== Mobs ===
'''[[Minecraft:Axolotl]]s'''
* Now only spawn in [[Minecraft:lush caves]].

'''[[Minecraft:Goat]]'''
* Now only spawn in the new mountain biomes.

'''General '''
* [[Minecraft:Block light]] level now must be 0 for [[Minecraft:Light#Mobs|many hostile mobs]] to spawn.<ref>{{tweet|_Ulraf_|1414985600273428480|Some more information about: "Monsters will only spawn in complete darkness" * This means that generic monster spawning is now only in complete darkness. (Mobs that have special rules like slimes or phantoms are unaffected by this) * This only affects block-light, not sky-light}}</ref>

=== World generation ===
'''[[Minecraft:Overworld]]'''
* Now uses the multi-noise biome source type.

'''[[Minecraft:Lush caves]] and [[Minecraft:dripstone caves]]'''
* Now generate naturally underground and inside hills or mountains.
** [[Minecraft:Azalea tree]]s now generate above lush caves.

'''[[Minecraft:Deep warm ocean]]'''
* Now generates naturally.

'''[[Minecraft:Swamp]]'''
* Does not generate correctly. This is fixed in 1.18 experimental snapshot 2.<ref name="tweet_henrikkniberg_1415591066179342336">{{tweet|henrikkniberg|1415591066179342336|Noticed some biomes were missing or not generating properly in the experimental snapshot. Re-adding swamps, ice spikes, and eroded badlands. Also experimenting with the cloud level.|July 15, 2021}}</ref>
'''Sub-[[Minecraft:biome]]s'''
* [[Minecraft:Wooded hills]], [[Minecraft:birch forest hills]], [[Minecraft:tall birch hills]], [[Minecraft:taiga hills]], [[Minecraft:taiga mountains]], [[Minecraft:gravelly mountains+]], [[Minecraft:desert hills]], [[Minecraft:desert lakes]], [[Minecraft:savanna plateau]], [[Minecraft:shattered savanna plateau]], [[Minecraft:swamp hills]], [[Minecraft:dark forest hills]], [[Minecraft:ice spikes]], [[Minecraft:snowy mountains]], [[Minecraft:snowy taiga hills]], [[Minecraft:snowy taiga mountains]], [[Minecraft:modified jungle]], [[Minecraft:jungle hills]], [[Minecraft:bamboo jungle hills]], [[Minecraft:jungle edge]], [[Minecraft:modified jungle edge]], [[Minecraft:giant tree taiga hills]], [[Minecraft:giant spruce taiga hills]], [[Minecraft:eroded badlands]], [[Minecraft:badlands plateau]], [[Minecraft:modified badlands plateau]], [[Minecraft:modified wooded badlands plateau]], and [[Minecraft:mushroom field shore]] biomes no longer generate naturally.
** Ice spikes, eroded badlands and savanna plateau were added back in 1.18 experimental snapshot 2.<ref name="tweet_henrikkniberg_1415591066179342336"/>
** Jungle edge was added back in 1.18 experimental snapshot 5.

[[File:1.18 Experimental Snapshot 1 approximate ore distribution.jpg|thumb|300px|The new ore generation for 1.18 Experimental Snapshot 1.]]
'''Ore distribution'''
* Changed ore generation of all ores making them have a spread value like [[Minecraft:lapis lazuli ore]]. Some still retain a linear generation alongside a spread generation.
* [[Minecraft:Coal ore]], [[Minecraft:emerald ore]], and [[Minecraft:copper ore]] no longer generate below Y=0.
** Copper ore generates between Y=0 and Y=96 and like all other ores, uses spread. It peaks at Y=48.
** Emerald ore generates above Y=32 as a spread, peaking at Y=256 and decreasing in quantity as the [[Minecraft:altitude]] decreases.
** Coal ore attempts to generate twice: once, evenly between an altitude of Y=136 and Y=256; and as a spread, peaking at an altitude of Y=96 and generating between an altitude of Y=0 and Y=192.
* Other ores also generate differently.
** [[Minecraft:Iron ore]] attempts to generate three times: once as a spread peaking at an altitude of Y=256, generating above Y=128; another as a spread peaking at Y=16 and generating with a minimum height of Y=-24 and a maximum height of Y=57, and a smaller one spreading evenly between the altitudes of Y=-64 and Y=72.
** [[Minecraft:Gold ore]] generates between the altitudes of Y=-64 and Y=32, peaking at Y=-16. The extra gold that generates in the [[Minecraft:badlands]] biome was left untouched.
** [[Minecraft:Lapis lazuli ore]] attempts to generate twice: once, as a spread between the altitudes of Y=32 and Y=-32, peaking at an altitude of 0; and evenly between the altitudes of Y=64 and Y=-64, generating buried like [[Minecraft:ancient debris]].
** [[Minecraft:Redstone ore]] attempts to generate twice: once, evenly between an altitude of Y=15 and Y=-64; and as a spread, peaking at an altitude of -64 and generating below an altitude of Y=-32.
** [[Minecraft:Diamond ore]] now generate as a spread, generating below Y=16 and peaking at altitudes near Y=-64.

'''General'''
* [[Minecraft:Terrain]] generation is now independent from [[Minecraft:biome]]s, with biomes adapting to whatever [[Minecraft:terrain]] they happen to generate throughout.<ref>{{YouTube link|6Ffu1gTEsVo|Minecraft 1.18 experimental snapshot|Henrik Kniberg|July 13, 2021|name=}}</ref>
** This allows for natural variation in the terrain of any individual biome, both in terms of shape and elevation.
*** For example, [[Minecraft:forest]]s and [[Minecraft:desert]]s could form up on a hill without needing a special biome just for that purpose.
** This additionally allows for smoother transitions between biomes.
* [[Minecraft:Terrain]] is now smoother and more extreme.

=== General ===
'''[[Minecraft:Height limit]]'''
* Has been increased to 384 blocks, expanding 64 blocks up and 64 blocks down, with 320 being the limit upward and -64 being the limit downward.

'''[[Minecraft:World type]]s'''
* "[[Minecraft:Large Biomes]]" and "[[Minecraft:AMPLIFIED]]" worlds can no longer be created.</onlyinclude>

== Gallery ==
<gallery>
TaigainPlains.png|Taiga village generated in plains biome in experimental 1.18 snapshot
Plains hills.png|Plains biome became a lot hillier with hills reaching all the way over Y=130.
Caveentrance.png|Entrance to the new cave systems which looks like a underground river coming from the mountain
Deepcave.png|An entrance to a deep cave
Waterfalls.png|Waterfalls like this became very common.
Biomeblend.png|Biomes blend more smoothly, as this frozen river is connecting two frozen oceans. 
Stoneshore.png|Stone shore biome became more common. In previous versions, it was found only where mountains were connected to ocean biomes.
Biomeblend2.png|Another example of new biome blending
Biomeblend3.png|Third example of biome blending
Frozenriver.png|Frozen river going deep into giant tree taiga biome
Azalea Tree Generation.png|Azalea tree generated in a taiga
Snowy Giant Spruce Taiga.png|Snowy giant spruce taiga
Lush NotCave.png|A lush cave extends above the ground.
</gallery>

== Fixes ==
* {{bug|MC-126009}} could be considered fixed by this version.

== Issues ==
This version is not supported on the bug tracker, and therefore issues affecting it will be resolved as "Invalid".<ref>{{bug|MC-231984}}</ref>

== Trivia ==
* This is the first time that the light level requirement for common hostile mob spawning has been changed for more than 10 years. The "light level 7 and below" rule was originally implemented on [[Minecraft:Java Edition Indev 0.31 20100204-2027|February 4, 2010]], while the game was still in its [[Minecraft:Java Edition Indev|Indev]] phase, and remained constant since with the exception of [[Minecraft:Java Edition Alpha v1.2.0]] through [[Minecraft:Java Edition Alpha v1.2.0_02]], where the restrictions were height based.
* This is not the first "experimental snapshot", as it was preceded by [[Minecraft:Java Edition Combat Tests]], but this is the first one to be available on Minecraft.net and the first to lead to [[Minecraft:Java Edition 21w37a|a proper snapshot]].
* This is the first time the terrain has been changed since [[Minecraft:Java Edition 1.13]] in 2018, and is the first time the terrain has been completely overhauled since [[Minecraft:Java Edition 1.7.2]] in 2013.
* Unlike later experimental snapshots, the title of this version is in title case.

== Videos ==
{{Slicedlime|Olik36jwUYw}}

== See also ==
*[[Minecraft:Bedrock Edition 1.17.10#Experimental]]

== Notes ==
{{Fnlist}}

== References ==
{{Reflist}}

== Navigation ==
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