Available to play
Killcraft
Runs Minecraft movement, combat, inventory, mobs and building inside ULTRAKILL levels.
What it does
A real Minecraft instance runs hidden and owns movement, health, hunger, inventory, weapons, mobs and block building while ULTRAKILL supplies the levels, enemies, checkpoints and rendering. Damage and combat are bridged both ways.
How it works
ULTRAKILL BepInEx plugin + SkyCraft Minecraft guest over shared memory
Requirements & limitations
The creator documents ULTRAKILL on Steam, BepInEx 5 x64 and an owned Minecraft Java Edition Microsoft account. First launch uses the bundled Prism setup to obtain Minecraft and Java; Skyrim is not required. ULTRAKILL movement and guns are replaced while Minecraft mode is enabled; F9 restores native mode.
Original sources
Evidence limits
On 2026-10-12 I read the GitHub releases page (v1.0.2 published 2026-10-11 with fixes), tags and README; MIT licence and requirements unchanged. No play-test was performed.
Code and releases are linked, not hosted here. Game files and footage retain their owners’ rights.