Immersive Overlays

Evidence

Ran on Kiln's test stand (2026-11-04): ImmersiveOverlaysFabricClient did not start: java.lang.NoClassDefFoundError: org/apache/logging/log4j/LogManager.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.platform.InputConstants.Key
• com.mojang.blaze3d.platform.Window
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents.ClientStarted
• net.fabricmc.fabric.api.tag.client.v1.ClientTags
• net.fabricmc.fabric.api.tag.convention.v2.ConventionalBiomeTags
• net.minecraft.client.renderer.RenderPipelines
• net.minecraft.client.resources.language.I18n
• net.minecraft.core.GlobalPos
• net.minecraft.core.component.DataComponents
• net.minecraft.locale.Language
• net.minecraft.network.chat.Style
• net.minecraft.network.chat.TextColor
• net.minecraft.server.packs.resources.ResourceManager
• net.minecraft.world.attribute.EnvironmentAttributeSystem
• net.minecraft.world.attribute.EnvironmentAttributes
• net.minecraft.world.effect.MobEffect
• net.minecraft.world.effect.MobEffectInstance
• net.minecraft.world.item.component.LodestoneTracker
• net.minecraft.world.level.MoonPhase
• net.minecraft.world.level.biome.Biome
• net.minecraft.world.level.biome.Biome.Precipitation
• net.minecraft.world.level.biome.Biomes
• net.minecraft.world.level.dimension.DimensionType
• net.minecraft.world.phys.AABB
• org.apache.commons.lang3.StringUtils
• org.apache.commons.lang3.text.WordUtils
• org.apache.logging.log4j.LogManager
• org.apache.logging.log4j.Logger
• InputConstants.UNKNOWN
• KeyMapping.isDown()
• Minecraft.getCameraEntity()
• Minecraft.getResourceManager()
• Minecraft.getWindow()
• Font.width()
• GuiGraphicsExtractor.blitSprite()
• ClientLevel.environmentAttributes()
• ClientLevel.getBiome()
• LocalPlayer.getLastDeathLocation()
• LocalPlayer.getRootVehicle()
• and 18 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

Overlays useful info like coordinates and the time onto your HUD - as long as you have the right item in your inventory (or bundle!)

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file immersiveoverlays-1.8.6+26.3-fabric.jar. The scan reads the mod's classes; it does not run them.