Cosy Critters & Creepy Crawlies

Calls something that is on Kiln's roadmap. Parts of it may already run.

Evidence

Ran on Kiln's test stand (2026-11-04): FabricEntrypoint did not start: java.lang.NoClassDefFoundError: net/minecraft/core/particles/ParticleType.

What it needs from Kiln

an access widener
Mixin
net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
net.fabricmc.fabric.api.client.particle.v1.ParticleProviderRegistry
net.fabricmc.fabric.api.client.particle.v1.ParticleProviderRegistry.PendingParticleProvider
net.fabricmc.fabric.api.particle.v1.FabricParticleTypes
net.minecraft.IdentifierException
net.minecraft.client.Camera
net.minecraft.client.gui.Hud
net.minecraft.client.gui.components.AbstractSelectionList
net.minecraft.client.gui.components.AbstractSelectionList.Entry
net.minecraft.client.gui.components.AbstractSliderButton
net.minecraft.client.gui.components.AbstractStringWidget
net.minecraft.client.gui.components.AbstractWidget
net.minecraft.client.gui.components.Button
net.minecraft.client.gui.components.Button.Builder
net.minecraft.client.gui.components.Button.OnPress
net.minecraft.client.gui.components.ChatComponent
net.minecraft.client.gui.components.ContainerObjectSelectionList
net.minecraft.client.gui.components.ContainerObjectSelectionList.Entry
net.minecraft.client.gui.components.CycleButton
net.minecraft.client.gui.components.CycleButton.Builder
net.minecraft.client.gui.components.CycleButton.OnValueChange
net.minecraft.client.gui.components.EditBox
net.minecraft.client.gui.components.StringWidget
net.minecraft.client.gui.components.Tooltip
net.minecraft.client.gui.components.debug.DebugScreenDisplayer
net.minecraft.client.gui.components.debug.DebugScreenEntries
net.minecraft.client.gui.layouts.GridLayout
net.minecraft.client.gui.layouts.GridLayout.RowHelper
net.minecraft.client.gui.layouts.HeaderAndFooterLayout
net.minecraft.client.gui.screens.ConfirmLinkScreen
net.minecraft.client.particle.ParticleEngine
net.minecraft.client.particle.ParticleProvider
net.minecraft.client.particle.SingleQuadParticle
net.minecraft.client.particle.SingleQuadParticle.Layer
net.minecraft.client.particle.SpriteSet
net.minecraft.client.renderer.GameRenderer
net.minecraft.client.renderer.state.GameRenderState
net.minecraft.client.renderer.state.level.LevelRenderState
net.minecraft.client.renderer.state.level.QuadParticleRenderState
net.minecraft.client.renderer.state.level.SkyRenderState
and 69 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Mixin (0.5)

In the author's words

Adds adorable atmospheric animals: birds, bugs, and bothersome creatures.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file cosycritters-0.3.3+26.2-fabric.jar. The scan reads the mod's classes; it does not run them.

Reports from players

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