Java Edition 22w13oneBlockAtATime

22w13oneBlockAtATime (known as 22w13oneblockatatime in the launcher) is an April Fools' joke snapshot, supposedly the first and only snapshot for the "One Block at a Time Update", released on April 1, 2022, which overhauled the player's inventory as well as the game logic for blocks, items and entities, and redesigned relevant gameplay aspects such as controlling, breaking and crafting. This version seems to be a fork of an experimental 1.19 snapshot, as it contains blocks from the deep dark biome.

Blocks

 * How did we get here?
 * All items are converted into item blocks.
 * Has ID
 * Has an  property (block state when placed, NBT tag when held) that specifies the internal ID of the item to display with (0-1104).
 * White Carpet.png  uses the model of white carpets.
 * Waterloggable.
 * In Debug Mode, all items and their waterlogged versions can be found.

Gameplay

 * Advancements
 * Added a new advancement:
 * Ride the End
 * Description reads "Extra Good luck"
 * Obtained for punching the Ender Dragon, causing the player to ride it; this is only possible once all end crystals are destroyed or with a dragon spawned by.


 * The End
 * Riding the ender dragon into the void teleports the player to the build limit in the Overworld.


 * The Nether
 * Riding the ender dragon into the void teleports the player to the build limit in the Overworld.

General

 * Particles
 * Added  particle, generated when player walks holding anything.


 * Splashes
 * All regular splashes have been removed.
 * Possible splashes are now "One!", "Block!", "At!", "A!", "Time!", or any possible arrangement of the words "One block at a time!".
 * The special " IS YOU" splash has been changed to " IS ONE AT A TIME".


 * Sounds
 * 2 new sounds were added
 * which is the intro sound.
 * Has 2 variations, one higher pitch and one normal pitch.
 * These sounds are located in the  folder and are called    and.
 * which is the old hurt sound.
 * These sounds are bundled in the  file.

Blocks

 * General
 * Blocks will not drop in dropped item forms.
 * When exploded, they are launched instead of dropped.


 * Andesite, Diorite and Granite
 * When exploded, they may turn into slabs, walls and stairs, and their polished blocks.
 * Polished variants, when exploded, may also turn into slabs, walls and stairs.


 * Bedrock
 * Now breakable and obtainable in survival.
 * Takes ~10.5 minutes to break with empty hands and a Haste II effect applied.


 * Chest
 * When loot chests generated in structures are broken, they emit explosion sound effects and particles, and explode out the loot items in falling block forms.


 * Deepslate
 * When destroyed by any explosion, it can turn into cobbled deepslate slabs, walls and stairs, or polished deepslate slabs, walls and stairs.


 * Dispenser
 * When powered with a redstone signal, the block it's facing will be dispensed with velocity in the direction of the dispenser as a falling block.
 * If the block is a fluid source, it turns into the form of buckets, and becomes fluid again when landing.


 * Dripstone
 * Plays trident sound when thrown.


 * Dropper
 * When powered with a redstone signal, the block it's facing will be dispensed as a falling block.
 * Unlike dispensers, the converted falling block will drop straight downwards.
 * If the block is a fluid source, it turns into the form of buckets, and becomes fluid again when landing.


 * End Stone
 * When destroyed by any explosion, it turns into end stone bricks, end stone brick slabs, end stone brick walls and end stone brick stairs.


 * End Portal Frame
 * Now breakable and obtainable in survival.
 * Takes ~37 seconds to break with empty hands and without Haste.
 * Can be found in chests inside nether fortresses.
 * They can either be orientated vertically or horizontally.
 * When placed in a stronghold, it points up, like in normal versions, which allows to build end portals.
 * When placed outside a stronghold, it points to a stronghold.
 * When placed in a dimension without a stronghold, it points to a random direction.
 * Has an eye of ender in place at all times.


 * Fire
 * May convert nearby smeltable items to their smelted item, such as coal ore to coal. Soul fire does not do this.
 * Can be picked up, though it is invisible when held by the player.


 * Glass and Glass Pane (including tinted and stained)
 * When thrown, they may break upon landing.
 * This applies to all blocks with  tag.


 * Grass and Fern
 * When thrown on a block that is not a grass block, they lay horizontally and change their variant to a gray one.


 * Gravel
 * When thrown, grass, leaves and vines adjacent to where it lands ignite.


 * Ice
 * When thrown into lava, fire or onto magma blocks, they directly become water.


 * Iron ore
 * Becomes a block of iron when thrown into fire.


 * Lava
 * When a smeltable item or block is thrown onto a lava block, it is converted into its smelted counterpart which overrides the lava it was thrown onto.


 * Logs and stripped logs
 * When an axe is thrown at a log, the axe breaks and the log becomes its stripped variant.


 * Mushroom Block
 * Becomes a shroomlight when thrown into fire.


 * Pumpkin
 * Becomes a carved pumpkin when thrown near a cactus.


 * Seagrass
 * When thrown on a block that is not a leaf block, they will be placed as normal and will generate a water block on them.


 * Stone
 * When destroyed, it can turn into cobblestone slabs, walls and stairs.
 * Becomes smooth stone when thrown into fire.


 * Vines
 * When thrown, they will lay horizontally and change their variant to a gray one.

Items

 * General
 * All items can be placed on the ground as blocks.
 * When trying to place an item anywhere that's not a block, it is thrown instead.
 * Throwing an item directly on the player's head will equip it in the helmet slot.
 * Throwing any smeltable item into lava or placing it near fire or lava will smelt it.
 * Thrown items are implemented as  entities.
 * Thrown items (or indeed any ) can be caught in midair by hitting it.
 * When throwing blocks with  tag (such as glass), they will be broken.
 * Items that do not have a block form are converted to  with the appropriate data.
 * Items can be crafted by placing a recipe above at least one crafting table, throwing the last item (recipe patterns top facing north)
 * Alternatively, the recipe can be placed and a crafting table can then be thrown to land on the recipe.
 * Tools may be used but break with one use.
 * Certain items (e.g. top of the door, tall grass, etc) have "invalid" block data and will disappear when they land (as a item). It is still possible to place them, however.


 * Bamboo
 * Can now be eaten by players named "Ulraf."


 * Ender Pearl
 * Can no longer teleport the player, as they cannot be thrown normally.


 * Eye of Ender
 * Can no longer lead the player to the nearest stronghold, as they cannot be thrown normally.


 * Potion
 * Any potion held uses the bottle texture.
 * Any thrown potion uses uncraftable potion texture.
 * Any potion placed on ground uses slow-falling potion texture.


 * Powder Snow Bucket
 * Thrown as a powder snow block when thrown.


 * Water Bucket and Lava Bucket
 * Make water and lava when thrown, with the bucket disappearing.

Mobs

 * General
 * When trying to damage a mob, the player will pick it up instead.
 * When falling, the player holds onto the mob that they picked up.
 * Some mobs like the ender dragon behave like rideable entities.
 * Some mobs like the wither cannot be ridden or picked up.
 * To damage mobs, the player has to:
 * Throw the mob
 * Throw any block, item or entity at the mob
 * Different blocks deal different amounts of damage based on their blast resistance; the formula seems to be the blast resistance times ten.
 * Release them in a stacked group of two or more.
 * Some mobs like the ender dragon cannot take damage from any block, item or entity.
 * Mobs that can hold items, like zombies, skeletons, etc. can steal the player's held item when damaging them, playing.


 * Bee
 * When held by the player, they will cause the player to keep the momentum from when they picked up the bee, albeit a lot slower.
 * If the player was completely still before picking up the bee, the player will not be able to move up or down whatsoever.
 * The player will be unable to jump while doing so.


 * Chicken
 * When held by the player, they will cause the player to float down slowly after jumping, similar to the Slow Falling effect.
 * When repeatedly, the player will be able to float upwards.


 * Ender Dragon
 * Now rideable by them.
 * Only 30 health points are displayed in the HUD.
 * When riding, the player can control it by looking around.
 * When flying down to the void of the End or the Nether (at y=-32), it descends to the build limit of the Overworld.
 * Flying down to the void of a custom dimension will also descend the player to the build limit of the Overworld.
 * When there is an ender crystal nearby, the player will be forced off.


 * Enderman
 * Every single enderman is now holding a random block. The random block can be any block in the game, including unobtainable blocks such as command blocks.
 * Each can have random properties, including being waterlogged.
 * Endermen can place waterlogged blocks in the Nether without the water disappearing.
 * All of them are stuck in a holding pose if not holding any blocks.
 * If an enderman holding a block attacks a player, the sound will play, and the block is given to the player.
 * When held by the player, the player and the enderman will teleport simultaneously.


 * Illusioner
 * When held by the player, they will shoot arrows in the direction of the player.


 * Iron Golem
 * Billyballong.png Appearance changes when named "billyballong", causing it to hold its hands in the air.
 * Gives flowers to players named "maria", "alva", "neo", "hidetaka" or "miyazaki" (case-insensitive).


 * Magma Cube
 * When held by the player, it will give the player fire resistance.
 * Pig
 * When held by the player, the pig is rendered upside-down and the holder will be magnetized to any block higher than two blocks above their head.
 * This will cause them to bounce up and down on the bottom side of the block.


 * Piglin
 * When held by the player, they will shoot arrows in the direction of the player. If held by the player while the arrow is fired, their crossbows will break after firing. When hostile, they will damage the player even while held.


 * Pillager
 * When held by the player, they will shoot arrows in the direction of the player. If held by the player while the arrow is fired, their crossbows will break after firing. Without their crossbows they stare at the player harmlessly and try to stay in crossbow range, despite not having a crossbow.


 * Player
 * Leaves a trail of footprints while holding anything.
 * When a player throws a block at another entity, the entity will be damaged.
 * When a player throws a block at another player's head, the block will go into the helmet slot of the receiving player. Taking damage has a chance to remove it.
 * When the block on the player's head is snow, a snow block, ice, packed ice, or blue ice, the player will begin freezing.
 * When the block on the player's head is a magma block, it will set the player on fire.
 * Alex wearing Barrel.png When the block on the player's head is a barrel, their vision is obscured, and their model appears as just their legs sticking out of the barrel.
 * Alex sneaking in Barrel.png Sneaking while wearing a barrel will disguise the player as a barrel block.
 * In Spectator Mode, the two hands of the player are visible.


 * Sheep
 * Are now sheared when they take damage or are thrown, dropping wool.
 * When with wool, when thrown a wool block, the wool color of the sheep will be replaced, dropping the wool of the previous color.
 * When without wool, when thrown a wool block, the wool will be put on the sheep.


 * Skeleton
 * Some skeletons "wear" two spyglasses when they spawn.
 * Skeletons wear spyglasses when thrown, up to two. They also can spawn with two spyglasses with unknown chance.
 * Based on Xilefian's idea.
 * When held by the player, they will shoot arrows in the direction of the player.


 * Spider
 * When held by the player, the player will be able to climb blocks vertically.


 * Stray
 * When held by the player, they will shoot arrows in the direction of the player.


 * Villager
 * Now have different trades.
 * Seems to have multiple trades, based on their profession and level. They gain more trades by leveling up by trading with them. The trade always includes emerald_ore blocks as for buying or selling.
 * Can now also trade mobs.
 * The player can trade with them by right clicking on the villager with emerald ore.
 * Their normal trading GUI is now inaccessible.
 * These changes also applies to wandering traders.


 * Witch
 * When held by the player, they will throw potions in the direction of the player.


 * Wolf
 * Mars.png Naming a tamed wolf 'Mars' will give it a unique texture.

Entities

 * Fireball
 * Player can hold a ghast's fireball, but when released, it will return to its original vector.


 * Eye of Ender
 * When summoned via commands, it will move to the origin point (X=0, Z=0) with its vector depending on its distance from the center of the world.

Gameplay

 * Explosion
 * Blocks that would be destroyed by an explosion are launched instead of destroyed.
 * Blocks launched represents the form of falling blocks before they land, and sometimes stuck in blocks without turning to normal blocks, causing possible.


 * Inventory
 * The inventory interface and hotbar have been removed.


 * GUI
 * Every single inventory for any kind of container block has been removed.
 * With the exception of the Horse Inventory.
 * Players now see both hands on the screen instead of just one.
 * Probably inspired by scrapped two-handed hold animation for skulls.

World generation

 * Stronghold
 * End portal frames without eyes of ender inside of them do not generate.
 * To open the end portal, the player needs to place down end portal frames.


 * The End
 * The sky now is dark-gray.

General

 * Debug screen
 * Mood in the debug screen has been changed to "Number of ghosts in world".


 * Loading screen
 * The loading screen has been changed.
 * Practically similar to 20w14∞'s loading screen, but with different textures.
 * Plays a sound saying "Mojang Studios", similar to 20w14∞ and 3D Shareware v1.34.
 * The silhouette inside the logo is a "Mojang" that resembles a Crewmate from the game.

Issues
22w13oneBlockAtATime is not supported due to being an April Fools' joke, and therefore issues affecting it get closed as "Invalid" in the issue tracker.

Trivia

 * This is the only version in which the player is able to truly hold blocks, rather than items corresponding to blocks. Endermen are the only mob to have this ability in normal versions.
 * When a spawner is picked up and placed back down, it will lose its block data and become a pig spawner.
 * With the help of a tamed horse, the player can shift - right click it and see their inventory. The player can put items in the slots with the help of the offhand.
 * Despite the snapshot's name, the player can still move items to the offhand, and, therefore, carry two blocks at a time.
 * Placing offhand items in creative mode does not consume the item, as usual, even though a main hand item is consumed in creative mode.
 * The player's usual  data is still accessible using commands like, , and , but, apart from the armor slots and offhand, this data doesn't do anything.
 * Using the command will always place items into the players hands. If the command is used while the player is already holding something, the new item will be thrown onto the ground (and place itself if it is a block).
 * The command will claim that   even if the player is holding something, if they had empty   data.
 * The command reveals that the hand slot is using the NBT tag , which is the same tag as for items held by endermen and which will always be a   if the target player is holding something that is not a normal block.
 * In creative mode, loading saved hotbars still modifies this data.
 * Picking up mobs modifies the player's  data, which is usually always empty.
 * Certain blocks, like fire, end or nether portal blocks, and end gateways, do not display properly when held or thrown — these are invisible in first person, and in some cases also in third person or also when thrown.
 * Blocks that do not normally have an item form can now be placed directly, like portal blocks.
 * Using to place a   with an ID that represents a block will cause it to display the block as if misaligned on the vertical axis, rotated so that the top points south, and with its faces culled to match what would be culled if it were a normal block, e.g.  for a "grass" block.
 * Some blocks and items that need tinting, such as grass blocks and spawn eggs, may display white as if they are not tinted.
 * When falling blocks touch ground, if they have air below them but stay on the edge of a solid block next to them, they may keep the form of "falling block" entities.
 * When holding a ghast, the player is displayed in the body of the ghast.
 * When holding a map, four hands are displayed in the screen, and three hands displayed when holding the map in the offhand slot.