More Sponge

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

Evidence

Ran on Kiln's test stand (2026-11-04): FabricMoreSponge did not start: java.lang.NoClassDefFoundError: net/minecraft/world/level/storage/loot/functions/LootItemFunction$Builder; FabricMoreSpongeClient did not start: java.lang.NoClassDefFoundError: net/minecraft/world/item/crafting/RecipeMap.

What it needs from Kiln

an access widener
Mixin
net.fabricmc.fabric.api.client.recipe.v1.sync.ClientRecipeSynchronizedEvent
net.fabricmc.fabric.api.lookup.v1.block.BlockApiLookup
net.fabricmc.fabric.api.object.builder.v1.entity.FabricDefaultAttributeRegistry
net.fabricmc.fabric.api.recipe.v1.sync.RecipeSynchronization
net.fabricmc.fabric.api.transfer.v1.item.ContainerStorage
net.fabricmc.fabric.api.transfer.v1.item.ItemStorage
net.fabricmc.fabric.api.transfer.v1.storage.base.CombinedSlottedStorage
net.fabricmc.fabric.impl.recipe.sync.SynchronizedRecipesImpl
net.minecraft.client.gui.screens.MenuScreens
net.minecraft.client.gui.screens.MenuScreens.ScreenConstructor
net.minecraft.client.gui.screens.inventory.AbstractContainerScreen
net.minecraft.client.model.EntityModel
net.minecraft.client.model.HeadedModel
net.minecraft.client.model.VillagerLikeModel
net.minecraft.client.model.geom.ModelLayers
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.MeshDefinition
net.minecraft.client.model.geom.builders.PartDefinition
net.minecraft.client.renderer.RenderPipelines
net.minecraft.client.renderer.entity.EntityRendererProvider
net.minecraft.client.renderer.entity.EntityRendererProvider.Context
net.minecraft.client.renderer.entity.EntityRenderers
net.minecraft.client.renderer.entity.MobRenderer
net.minecraft.client.renderer.entity.layers.CrossedArmsItemLayer
net.minecraft.client.renderer.entity.layers.CustomHeadLayer
net.minecraft.client.renderer.entity.state.HoldingEntityRenderState
net.minecraft.client.renderer.entity.state.VillagerRenderState
net.minecraft.core.BlockPos.TraversalNodeStatus
net.minecraft.core.HolderGetter
net.minecraft.core.HolderSet
net.minecraft.core.HolderSet.Named
net.minecraft.core.NonNullList
net.minecraft.data.worldgen.BootstrapContext
net.minecraft.network.codec.ByteBufCodecs
net.minecraft.network.codec.StreamCodec
net.minecraft.stats.Stats
net.minecraft.tags.BiomeTags
and 82 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

Adds compressed sponges and new lava, snow, and fire sponge variants — each with 5 compression tiers, passive biome-based drying, and a Freezer machine.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file moresponge-fabric-26.3-26.3.0.1.jar. The scan reads the mod's classes; it does not run them.

Reports from players

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