Blockus

Evidence

Ran on Kiln's test stand (2026-11-04): Blockus did not start: java.lang.NoClassDefFoundError: net/minecraft/world/level/block/TrapDoorBlock; BlockusClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/renderer/entity/EntityRenderer.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.biome.v1.BiomeModifications
• net.fabricmc.fabric.api.biome.v1.BiomeSelectors
• net.fabricmc.fabric.api.client.rendering.v1.BlockColorRegistry
• net.fabricmc.fabric.api.client.rendering.v1.ModelLayerRegistry
• net.fabricmc.fabric.api.client.rendering.v1.ModelLayerRegistry.TexturedLayerDefinitionProvider
• net.fabricmc.fabric.api.creativetab.v1.FabricCreativeModeTab
• net.fabricmc.fabric.api.datagen.v1.provider.FabricDynamicRegistryProvider
• net.fabricmc.fabric.api.datagen.v1.provider.FabricDynamicRegistryProvider.Entries
• net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder
• net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder.BooleanRuleBuilder
• net.fabricmc.fabric.api.item.v1.BlockTransformerHelper
• net.fabricmc.fabric.api.item.v1.DefaultItemComponentEvents
• net.fabricmc.fabric.api.item.v1.DefaultItemComponentEvents.ModifyCallback
• net.fabricmc.fabric.api.item.v1.DefaultItemComponentEvents.ModifyContext
• net.fabricmc.fabric.api.object.builder.v1.block.type.BlockSetTypeBuilder
• net.fabricmc.fabric.api.object.builder.v1.block.type.WoodTypeBuilder
• net.fabricmc.fabric.api.registry.FlammableBlockRegistry
• net.fabricmc.fabric.api.registry.OxidizableBlocksRegistry
• net.fabricmc.fabric.api.tag.convention.v2.ConventionalBiomeTags
• net.minecraft.client.color.block.BlockTintSources
• net.minecraft.client.model.geom.ModelLayerLocation
• net.minecraft.client.model.object.boat.BoatModel
• net.minecraft.client.model.object.boat.RaftModel
• net.minecraft.client.renderer.entity.BoatRenderer
• net.minecraft.client.renderer.entity.EntityRendererProvider
• net.minecraft.client.renderer.entity.EntityRendererProvider.Context
• net.minecraft.client.renderer.entity.EntityRenderers
• net.minecraft.client.renderer.entity.RaftRenderer
• net.minecraft.core.Direction.Axis
• net.minecraft.core.HolderGetter
• net.minecraft.core.HolderLookup.RegistryLookup
• net.minecraft.core.NonNullList
• net.minecraft.core.component.DataComponentMap
• net.minecraft.core.component.DataComponentMap.Builder
• net.minecraft.core.component.DataComponents
• net.minecraft.core.dispenser.BoatDispenseItemBehavior
• net.minecraft.core.particles.ColorParticleOption
• net.minecraft.core.particles.ParticleTypes
• net.minecraft.data.worldgen.BlockStateProviders
• net.minecraft.data.worldgen.BootstrapContext
• and 82 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

A mod that adds blocks!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file blockus-2.18.3+26.3.jar. The scan reads the mod's classes; it does not run them.