Spiders 2.0 polymerized

Evidence

Ran on Kiln's test stand (2026-11-04): SpiderMod did not start: java.lang.NoClassDefFoundError: net/minecraft/world/entity/monster/spider/Spider.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.math.Axis
• net.fabricmc.fabric.api.object.builder.v1.entity.FabricEntityType
• net.fabricmc.fabric.api.object.builder.v1.entity.FabricEntityType.Builder
• net.fabricmc.fabric.api.object.builder.v1.entity.FabricEntityType.Builder.Mob
• net.minecraft.commands.arguments.EntityAnchorArgument
• net.minecraft.commands.arguments.EntityAnchorArgument.Anchor
• net.minecraft.core.BlockPos.MutableBlockPos
• net.minecraft.core.Direction.Axis
• net.minecraft.core.component.DataComponents
• net.minecraft.network.syncher.SynchedEntityData
• net.minecraft.network.syncher.SynchedEntityData.Builder
• net.minecraft.server.level.ChunkMap
• net.minecraft.server.level.ChunkMap.TrackedEntity
• net.minecraft.server.level.ServerChunkCache
• net.minecraft.server.level.ServerEntity
• net.minecraft.tags.BlockTags
• net.minecraft.tags.TagKey
• net.minecraft.util.Brightness
• net.minecraft.util.Mth
• net.minecraft.world.effect.MobEffectInstance
• net.minecraft.world.effect.MobEffects
• net.minecraft.world.entity.EntityDimensions
• 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.EntityTypes
• net.minecraft.world.entity.Mob
• net.minecraft.world.entity.MobCategory
• net.minecraft.world.entity.MoverType
• net.minecraft.world.entity.SpawnPlacementTypes
• net.minecraft.world.entity.SpawnPlacements
• net.minecraft.world.entity.SpawnPlacements.SpawnPredicate
• net.minecraft.world.entity.UpdateInterval
• net.minecraft.world.entity.WalkAnimationState
• net.minecraft.world.entity.ai.attributes.AttributeModifier
• net.minecraft.world.entity.ai.attributes.AttributeModifier.Operation
• net.minecraft.world.entity.ai.attributes.AttributeSupplier
• net.minecraft.world.entity.ai.attributes.AttributeSupplier.Builder
• net.minecraft.world.entity.ai.control.JumpControl
• and 67 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

Serverside port of the Spiders 2.0 mod by TheCyberBrick

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file Spiders-2.0-1.1.1+26.3.jar. The scan reads the mod's classes; it does not run them.