Sandboxes

Evidence

Ran on Kiln's test stand (2026-11-04): SandboxesClient did not start: java.lang.NoClassDefFoundError: net/minecraft/network/chat/FormattedText.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.platform.InputConstants.Key
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.blaze3d.vertex.PoseStack.Pose
• com.mojang.blaze3d.vertex.QuadInstance
• com.mojang.blaze3d.vertex.VertexConsumer
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientChunkEvents
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientChunkEvents.Load
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientChunkEvents.Unload
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents.ClientStarted
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Disconnect
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Join
• net.fabricmc.fabric.api.client.rendering.v1.level.LevelRenderContext
• net.fabricmc.fabric.api.client.rendering.v1.level.LevelRenderEvents
• net.fabricmc.fabric.api.client.rendering.v1.level.LevelRenderEvents.CollectSubmits
• net.fabricmc.loader.api.ModContainer
• net.fabricmc.loader.api.SemanticVersion
• net.fabricmc.loader.api.Version
• net.fabricmc.loader.api.VersionParsingException
• net.fabricmc.loader.api.metadata.ModMetadata
• net.minecraft.SharedConstants
• net.minecraft.client.Options
• net.minecraft.client.gui.screens.GenericMessageScreen
• net.minecraft.client.gui.screens.PauseScreen
• net.minecraft.client.gui.screens.TitleScreen
• net.minecraft.client.gui.screens.inventory.CreativeModeInventoryScreen
• net.minecraft.client.gui.screens.inventory.InventoryScreen
• net.minecraft.client.gui.screens.worldselection.WorldOpenFlows
• net.minecraft.client.multiplayer.ClientChunkCache
• net.minecraft.client.renderer.SubmitNodeCollector
• net.minecraft.client.renderer.SubmitNodeCollector.CustomGeometryRenderer
• net.minecraft.client.renderer.block.BlockStateModelSet
• net.minecraft.client.renderer.block.dispatch.BlockStateModel
• net.minecraft.client.renderer.block.dispatch.BlockStateModelPart
• net.minecraft.client.renderer.rendertype.RenderTypes
• net.minecraft.client.renderer.state.level.CameraRenderState
• net.minecraft.client.renderer.state.level.LevelRenderState
• net.minecraft.client.renderer.texture.OverlayTexture
• net.minecraft.client.resources.model.ModelManager
• and 44 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

Make a creative copy of your world from the pause menu, try anything in it, and return to survival where you left off.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file sandboxes-2.2.0+26.3.jar. The scan reads the mod's classes; it does not run them.