Choose your disk image (.d64) or cartridge file (.crt) of the game
with Load .d64 / .crt, or drop it anywhere on this page. Files this editor
exported (.d64, .crt or .prg) load too, so you can carry on editing them.
Everything happens in your browseron this device (a disk is unpacked by running the game's own decompressors); nothing is uploaded anywhere.
If a file isn't a version the editor supports, it says so.
No disk image at hand? Two rooms drawn with placeholder art let you try every tool. Exports are off for them.
A disk exports as a new .d64 or .prg containing just the game and its high-score file. A cartridge exports as a new .crt, identical to the original apart from the edited rooms. No game files come with this editor, and exports are for your own use only.
IM Room Editor