Drop through a trapdoor into Isaac's Basement: shoot tears, grab items and beat the boss, all inside Minecraft.
Turn your single-player Minecraft world into a Binding of Isaac run. Place the Basement Trapdoor, step on it, and fall into a floor of rooms built from your own copy of The Binding of Isaac: Rebirth: its room layouts, monsters, bosses, items, sounds and music.
How a run plays
Controls
Your run ends if you quit the game. Rejoining puts you back on the surface.
You need: Minecraft: Java Edition 1.21.1 and The Binding of Isaac: Rebirth installed. Isaac doesn't need to be running, and none of either game's files are included. Single player only.
Original mod by lotusavery17 (MIT). Fabric API by FabricMC (Apache-2.0).

