ULTRAKILL's speed and guns inside a living Minecraft survival world: mine, build, and survive the night waves.
Drop ULTRAKILL's movement and arsenal into your own Minecraft survival world. Slide, dash and grapple across real Minecraft terrain while Minecraft runs the world beside it: day turns to night, mobs roam, and when darkness falls, waves of ULTRAKILL's demons and machines come for you.
What you can do
- Fight with ULTRAKILL's guns, against Minecraft mobs as well as ULTRAKILL enemies
- Press V to swap between guns and Minecraft-style mining and building
- Press E to open your Minecraft inventory and craft as usual
- Use G at the gun terminal near your spawn, and H to return to camp
- Press O for Minecraft's options
Before you play
Single-player on Windows. You need your own ULTRAKILL and Minecraft: Java Edition. Patch installs what it needs and starts Minecraft 26.3 alongside ULTRAKILL. If Minecraft asks you to sign in, finish that first. Your UltraCraft world is saved in Minecraft and reopens next time.
Credits
Based on UltraCraft by Qua5eyeNimbl3 (MIT), whose bridge builds on SkyCraft by chasmlol and PeakCraft by aeironnsarmiento (MIT). Includes Fabric API by FabricMC (Apache-2.0). Patch contributors added the startup and session handling. The full license notices come with the mod.
