"1.21.1 (9.3.1)"

• The Java requirement for 1.21.1 is Java 21. This will come shipped with most launchers. For manual installation, you may need to install a later JRK.
• The minimum Neoforge version for this update is 21.1.172 and is required for a Pixelmon client to run.
• Worlds from 1.16.5 may not work with newer versions of Minecraft. Consider backups before updating.
• If using datapacks, consider refreshing every update for default datapack fixes from Pixelmon.

Version Update:

• Updated recommended Neoforge to 21.1.172

Changes

• All Pokemon that can spawn at a minimum of level 5 has been lowered to 2, to accommodate players spawning fresh into the world.
• New Music Discs have been added: Boss, Gym, Legendary, Player, PokéCenter, Raid, Trainer, Ultra Space Ambient, and Wild.
• 22342 Bergmite can now evolve into Hisuian Avalugg when leveled up in Groves, replacing the outdated Snowy Taiga Hills biome requirement.
• Fire Stones may now be discovered in mesa biomes, embedded in stone between Y=0–200.
• Water Stones can be uncovered on ocean floors, replacing gravel.
• Leaf Stones appear in forest biomes, near the surface beneath dirt or exposed in stone.
• Moon Stones are located in mountainous regions, found between Y=100–320.
• Sun Stones now generate in arid biomes within sandstone from Y=0–100.
• Dawn, Dusk, and Shiny Stones can be found in plains, swamps, and flower-covered regions respectively, each within stone from Y=0–200.
• Ice Stones appear atop glaciers or frozen mountain peaks, embedded in packed ice.
• Fossils can now be excavated from gravel between Y=-20–100.
• Gracidea flowers now grow naturally on the floor of flower forests.
• Silicon now has new smelting and blasting recipes using gravel and quartz, with increased experience rewards for quartz use.
• Platinum Ore no longer references Ruby Ore, and its rarity has been re-balanced to align more closely with diamond.
• Silver Ore generation has been reduced to prevent it from appearing significantly more often than Gold Ore.
• Biomes from Biomes O’ Plenty have been updated to match 1.21.1 parity.
• All block tags (e.g., Land, TreeTop) have been brought up to date with 1.21.1 standards.
• Biome transitions from Oh The Biomes You’ll Go to Oh The Biomes We’ve Gone have been reflected across spawn data.
• Pokémon formerly spawning in BOP’s Tundra now appear in BWG’s Crimson Tundra.
• Replaced all references to Coral Mangroves with Lush Stacks.
• Lush Stacks has been added as a valid spawn for Warm Ocean water spawns.
• Nacli and its evolutions now spawn in BOP’s Wasteland and Wasteland Steppe.
• Replaced BYG’s Rocky Beach with BWG’s Dacite Shore in spawn definitions.
• BOP’s Gravel Beach has been added to Stone Shore spawns.
• Klawf now appears in BOP’s Gravel Beach and BWG’s Dacite Shore.
• Minior has been added to BWG’s Eroded Borealis biome.
• Kubfu now spawns in BWG’s Crag Gardens, replacing its previous spawn in BYG’s Bamboo Forest.
• Kyurem can now be found in BWG’s Eroded Borealis.

Fixes

• 22540 Untradeable Pokémon can no longer be placed into Poke Gifts.
• Returning to the battle UI after using free roam no longer results in a softlock or client crash caused by an unresponsive interface.
• Fixed name formatting of Paldean TMs
• Flamigo's flying animation has been improved, and should loop correctly.
• Roaring Moon's texture has now been fully coloured in.
• Flutter Mane's ribbon is now coloured correctly, and the skirt detail is no longer incorrectly mirrored.
• Hoopa's Unbound form will now learn Hyperspace Fury at level 85, rather than Hyperspace Hole.
• 22266 Leaves added by Pixelmon and Ultra Jungle Vines now require shears to drop, and no longer drop when mined by hand.
• Fixed a bug where picking up any item would incorrectly grant multiple Pixelmon recipes.
• 22323 The objective for Stage 2 of the 'The Psychic Storm' research now correctly requires crafting a single Orb of Frozen Souls, rather than ten.
• 21907 Type: Null can now correctly spawn in strongholds, as its spawn location has been updated from Land to Indoors.
• 22536 Mobs can once again be spawned using spawn eggs, mob spawners, and the /summon command. This applies regardless of the allow-vanilla-mobs config setting.
• The camera during Pokémon evolution no longer stutters or rapidly repositions.
• Fixed a crash caused by a null pointer exception when two wild Pokémon initiated a battle without a player present.
• Pokémon status conditions are now correctly cleared after blacking out and respawning at the player spawnpoint.
• 22527 Fixed a client crash that occurred when using the “Apply Preset” option in the NPC editor while in multiplayer, regardless of whether a preset was selected.
• 22525 Fixed a client disconnection that occurred when placing a trainer-type NPC using the NPC editor. The NPC now spawns without requiring a reconnect.
• Fixed a crash that occurred when attempting to edit an NPC, caused by a packet encoding failure.
• Attempting to add an Essence Jar to the inventory via commands or the creative menu no longer causes the game to crash.
• The game no longer crashes when a Mystery Box is added to the player’s inventory.
• Mew will now properly appear in the Cloning Machine and is no longer consumed when initiating the cloning process.
• Text in the move tutor UI no longer appears overly bold or darkened when a move is selected.
• Pixelmon Music Discs now function correctly, with updated names, credits, and proper playback through datapack integration.
• Fixed an issue caused by custom Pokémon species with National Dex numbers exceeding 32767 crashing the server.
• Fixed an issue where Pokémon would not level up after battles despite gaining sufficient EXP, unless prompted by an additional EXP source.
• Fixed clients being kicked for carrying certain items in stack sizes uncommunicated to the server, such as Super Potions.
• 22529 Fixed an issue where using /pokeevolve could cause the client to crash during the evolution sequence.
• 22532 Fixed a client crash that occurred when pressing the Tab or Alt keys on the multiplayer server list screen.
• Fixed Safety Goggles, Relic Crowns Pixelmon Photos, and various other sprites not rendering properly as wearable models on Armour stands.
• Recipes have been updated to use NeoForge tags, display in proper Recipe Book categories, group similar variants together, and correctly appear when using colored wool.
• 22539 22538 22534 An issue causing battles to desync or crash due to improperly constructed moveset packets has been resolved.
• Defeating boss Pokémon no longer causes a battle error, and rewards such as experience and item drops now function correctly.
• The text in the Day Care inventory screen has been realigned and no longer appears cut off.
• Cloning Machines and PokéStops now remain rendered when extremely close.
• Klawf should now spawn as intended.
• Raid battles now correctly display the reward screen and grant loot, and no longer cause disconnects when drops are empty.
• 22495 Ultra Deep Sea Pickles now drop the correct number of items based on the size of the colony when broken.
• Wild Battle Victory advancements now progress correctly and no longer cause parsing errors.
• 22553 Battle music now stops correctly when leaving a battle via free roam after walking out of range.
• Pokémon now correctly appear in the world when switched to during battle, and loot is properly awarded after switching mid-battle.
• Defeating Gimmighoul or Gholdengo no longer causes disconnects, and Gimmighoul now evolves with 99 coins; coin drop rates have been reduced accordingly.
• 22541 Fog now correctly affects Pokémon, preventing them from appearing fully black or overly visible through thick fog in Ultra Space.
• The Ultra Space Teleporter now places players at the highest Y-level, preventing spawns inside solid blocks.
• Battle music now fades in and plays at a volume consistent with the master volume setting.
• 22553 Battle music now stops correctly after the player respawns from a full party faint.
• The custom music disc has been removed to prevent tag loading errors.
• Rocket’s Secret Experiment painting has been restored and now loads correctly.
• The Dream Ball Infuser recipe has been updated to fix a parsing error and now loads correctly in-game.
• The Infuser recipes are now usable.
• 22372 Slowking and Galarian Slowking now have their Egg and Tutor moves correctly categorized and learnable.
• The Recipe Book search bar now correctly respects focus, allowing for uninterrupted text input.
• The Mystery Box loot table has been updated to use valid functions and now loads correctly.
• The Day Care chest loot table now references the 1.21.1 updated item ID for scute and no longer causes parsing errors.
• Using certain hotkeys while the recipe book is closed no longer causes the client to crash, or swap to a different screen.
• Ditto created via the cloning machine now spawns correctly, preventing a potential crash.
• Pressing hotkeys while the recipe book is closed no longer causes the client to crash.
• Split stack behavior in the Survival inventory now functions as intended.
• Mega Lucario now renders correctly after Mega Evolution in battle.
• Receiving Blank TMs or TRs from loot or commands no longer causes the game to crash or freeze.
• Fixed an issue where the ability Harvest could recover items other than Berries, even while the user was still holding an item.
• Corrected unintended behavior that caused item duplication or deletion when Harvest activated improperly.
• Fixed an issue where switching between multiplayer servers and single-player worlds in the same session could prevent the single-player world from loading correctly.
• Trainer NPC parties can now be correctly edited immediately after placement without requiring a world restart.
• Items can once again be sold to NPC Shopkeepers as intended.
• Poké Balls can now be thrown at Pokémon even when standing close to them.
• Emissive textures have been properly applied to Strike, Ashen, and Alter palette Pokémon, restoring their intended glow effects.
• Fishing Log entries for all JUMP! forms of Slugma and Clobbopus now display their descriptions correctly.
• 22351 Skeledirge can now correctly learn its intended Egg Moves through breeding.
• Shiny Koraidon now displays its proper flying animation when ridden in the air.
• Updated the Shiny sprite for Iron Jugulis to display its correct gray coloring.
• Updated Rellor’s model and animations to better reflect its intended appearance and behavior.
• Fixed an issue where Poké Balls could not be thrown at Pokémon when standing too close.
• PC option buttons now disappear properly after closing or canceling an action.
• 17342 Legendary and boss battle music now plays correctly, including during raids.
• 19477 Fossil Machine progress now updates correctly and no longer gets stuck at 33%.
• 18935 Legendary Pokémon now retain their intended levels and are no longer affected by Y-level scaling when spawning underground.
• Pixelmon armor now renders correctly and is no longer invisible when worn.
• 21944 Slugma and Larvitar now appear with correct proportions in the Pokédex view.
• Pokémon disguised by the Illusion ability now correctly match the hitbox size of their disguise.
• 17291 The flame on Magmar’s tail now appears correctly.
• Ultra Elm and Ultra Jungle trees now require a 2×2 sapling formation to grow, as intended.
• Pokémon movement has been adjusted to prevent overly high jumps and ensure they can step over one-block terrain properly.
• Poké Marts now correctly display and sell the intended types of Poké Balls, rather than defaulting to regular Poké Balls.
• The Eject Pack now uses its correct sprite and is fully accessible in-game.
• Utility Umbrella and Eject Pack are now properly available in the Creative inventory.
• Pokémon can now spawn across the full area of multi-chunk structures, rather than being limited to a single chunk.
• Updated item visuals with new sprites for Juice items and the Colorful Shake.
• 20064 Dawn and Dusk Stone Ore no longer drops cobblestone under any circumstances.
• 20064 Mining Dawn or Dusk Stone Ore during their respective times now yields double shard drops, restoring pre-9.1.4 behavior.
• Updated the definitions of “dawn” and “dusk” to match Pixelmon’s internal spawning system.
• Silk Touch now correctly preserves ore drops and no longer fails due to outdated enchantment checks.
• Slowking and Galarian Slowking can now learn Helping Hand via TM; Galarian Slowking also now supports Snowscape.
• Removed outdated and misspelled biome references from raid spawn data to reduce startup warnings and improve raid compatibility.
• Hisuian Sliggoo’s cry now plays correctly.
• Fixed missing or incorrect subtitle text and keys.
• 22531 Resolved a rendering issue where Pokémon models appeared distorted when using the Sodium mod.
• Logging into vanilla and non-Pixelmon servers now works correctly.
• Unnecessary network data is no longer sent when connecting to servers without Pixelmon installed.
• 21850 Z-Moves now appear and function correctly in battle when using the appropriate Z-Crystal, allowing moves to be selected as intended.

Language

• Added missing language keys for Toast Curry.