Ancient Creature

Evidence

Ran on Kiln's test stand (2026-11-04): FabricAncientCreature did not start: java.lang.NoClassDefFoundError: net/minecraft/server/packs/resources/PreparableReloadListener; FabricAncientCreatureClient did not start: java.lang.NoClassDefFoundError: net/minecraft/server/packs/resources/PreparableReloadListener.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.blaze3d.vertex.PoseStack.Pose
• com.mojang.math.Axis
• net.fabricmc.fabric.api.biome.v1.BiomeModifications
• net.fabricmc.fabric.api.biome.v1.BiomeSelectors
• net.fabricmc.fabric.api.client.item.v1.ItemTooltipCallback
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.Context
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.PlayPayloadHandler
• net.fabricmc.fabric.api.client.rendering.v1.ModelLayerRegistry
• net.fabricmc.fabric.api.client.rendering.v1.ModelLayerRegistry.TexturedLayerDefinitionProvider
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents.Join
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarted
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStopped
• net.fabricmc.fabric.api.event.registry.DynamicRegistries
• net.fabricmc.fabric.api.event.registry.DynamicRegistries.SyncOption
• net.fabricmc.fabric.api.loot.v3.LootTableEvents.ModifyDrops
• net.fabricmc.fabric.api.networking.v1.PacketSender
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.Context
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.PlayPayloadHandler
• net.fabricmc.fabric.api.object.builder.v1.entity.FabricDefaultAttributeRegistry
• net.fabricmc.fabric.api.resource.v1.ResourceLoader
• net.minecraft.client.Camera
• net.minecraft.client.animation.AnimationChannel
• net.minecraft.client.animation.AnimationChannel.Interpolation
• net.minecraft.client.animation.AnimationChannel.Interpolations
• net.minecraft.client.animation.AnimationChannel.Target
• net.minecraft.client.animation.AnimationChannel.Targets
• net.minecraft.client.animation.AnimationDefinition
• net.minecraft.client.animation.AnimationDefinition.Builder
• net.minecraft.client.animation.Keyframe
• net.minecraft.client.animation.KeyframeAnimation
• net.minecraft.client.animation.KeyframeAnimations
• net.minecraft.client.color.item.ItemTintSources
• net.minecraft.client.gui.components.EditBox
• net.minecraft.client.gui.screens.MenuScreens
• and 81 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Machines (0.4), Mixin (0.5)

In the author's words

Ancient Creature adds prehistoric discoveries to Minecraft. Explore dig sites, uncover fossil fragments and ancient eggs, identify remains, and piece together creatures from the distant past.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file ancientcreature-fabric-26.3-26.3.0.4.jar. The scan reads the mod's classes; it does not run them.