Creeperlings

Evidence

Ran on Kiln's test stand (2026-11-04): Creeperlings did not start: java.lang.NoClassDefFoundError: net/minecraft/world/item/SpawnEggItem; CreeperlingsClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/model/geom/ModelLayerLocation.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.client.rendering.v1.EntityRendererRegistry
• net.fabricmc.fabric.api.client.rendering.v1.ModelLayerRegistry
• net.fabricmc.fabric.api.client.rendering.v1.ModelLayerRegistry.TexturedLayerDefinitionProvider
• net.fabricmc.fabric.api.object.builder.v1.entity.FabricDefaultAttributeRegistry
• net.minecraft.client.model.EntityModel
• net.minecraft.client.model.geom.ModelLayerLocation
• net.minecraft.client.model.geom.ModelPart
• net.minecraft.client.model.geom.PartPose
• net.minecraft.client.model.geom.builders.CubeDeformation
• net.minecraft.client.model.geom.builders.CubeListBuilder
• net.minecraft.client.model.geom.builders.LayerDefinition
• net.minecraft.client.model.geom.builders.MeshDefinition
• net.minecraft.client.model.geom.builders.PartDefinition
• net.minecraft.client.renderer.entity.EntityRendererProvider
• net.minecraft.client.renderer.entity.EntityRendererProvider.Context
• net.minecraft.client.renderer.entity.MobRenderer
• net.minecraft.client.renderer.entity.state.CreeperRenderState
• net.minecraft.util.Mth
• net.minecraft.world.effect.MobEffect
• net.minecraft.world.effect.MobEffectCategory
• net.minecraft.world.entity.EntitySpawnReason
• net.minecraft.world.entity.EntityType
• net.minecraft.world.entity.EntityType.Builder
• net.minecraft.world.entity.EntityType.EntityFactory
• net.minecraft.world.entity.MobCategory
• net.minecraft.world.entity.ai.attributes.AttributeSupplier
• net.minecraft.world.entity.ai.attributes.AttributeSupplier.Builder
• net.minecraft.world.entity.monster.Creeper
• net.minecraft.world.item.SpawnEggItem
• net.minecraft.world.level.gamerules.GameRules
• FabricCreativeModeTabOutput.insertAfter()
• Registry.wrapAsHolder()
• BuiltInRegistries.ENTITY_TYPE
• BuiltInRegistries.MOB_EFFECT
• ServerLevel.addFreshEntity()
• ServerLevel.getGameRules()
• LivingEntity.getRandom()
• Item.Properties.spawnEgg()
• Items.CREEPER_SPAWN_EGG

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

Replaces creepers griefing blocks with them spawning creeperlings instead

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file creeperlings-1.2.0-26.3.jar. The scan reads the mod's classes; it does not run them.