Chill Play

Evidence

Ran on Kiln's test stand (2026-11-04): EntertainingGameplay did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload; EntertainingGameplayClient did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload.

What it needs from Kiln

• Mixin
• 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.event.lifecycle.v1.ServerTickEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents.EndTick
• net.fabricmc.fabric.api.event.player.UseItemCallback
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.Context
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.PlayPayloadHandler
• net.minecraft.advancements.Advancement
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.Builder
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.core.UUIDUtil
• net.minecraft.core.component.DataComponents
• net.minecraft.core.particles.ParticleTypes
• net.minecraft.network.codec.ByteBufCodecs
• net.minecraft.network.codec.StreamCodec
• net.minecraft.network.protocol.common.custom.CustomPacketPayload
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.Type
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.TypeAndCodec
• net.minecraft.network.protocol.game.ClientboundSetActionBarTextPacket
• net.minecraft.server.MinecraftServer
• net.minecraft.server.PlayerAdvancements
• net.minecraft.server.ServerAdvancementManager
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.server.players.PlayerList
• net.minecraft.stats.ServerStatsCounter
• net.minecraft.stats.StatFormatter
• net.minecraft.stats.StatType
• net.minecraft.stats.Stats
• net.minecraft.tags.ItemTags
• net.minecraft.util.FormattedCharSequence
• net.minecraft.world.entity.EntityType
• net.minecraft.world.entity.EquipmentSlot
• net.minecraft.world.entity.animal.pig.Pig
• net.minecraft.world.entity.item.ItemEntity
• and 37 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 progression mod that brings back the gameplay experience we used to enjoy to the fullest, just like in the old days.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file Chill Play 1.0 - 26.3.jar. The scan reads the mod's classes; it does not run them.