The Ultracraft mod, created by player alfr0762, integrates the shooter game ULTRAKILL into Minecraft. It locates the installed copy of ULTRAKILL on Steam, runs the game client simultaneously, and syncs the visuals to the Minecraft window, rather than merely mimicking the original game's animations and textures.
The mod is designed for Minecraft 1.21.11, requires the Fabric loader, and the UltraBridge plugin running on BepInEx 5. Since both games need to run simultaneously, the author has also provided performance settings such as lowering the resolution.
Players can control V1, using weapons, sliding, dashing, and parrying with mechanical arms. Zombies, skeletons, and creepers from Minecraft are also affected by attack mechanics such as explosions, coin ricochets, and electric shocks.
The mod also includes a weapon shop terminal, themed arenas, and a survival mode with 50 varied scenarios, supporting multiplayer via LAN or Essential. Progress, style scores, and purchased equipment are saved within the block world and do not modify the original save files of ULTRAKILL.
Ultracraft is aimed at Windows users, is reportedly free, and can be obtained from CurseForge and Modrinth.