Turn on turbo mode (shift + click green flag) for faster generation. (Make sure to turn it off if you're going to play!) Use arrow keys to move.
PATCH NOTES: v1: Release v2: Added walls (filled-in tiles) and fire exits v3: Walls now have a 1/3 chance to not generate. This makes the map generate a little bit more expansively. v4: Fixed a bug where some rooms would become inaccessible due to wall tiles.