Procrastivania

A metroidvania where you play as the world designer, placing rooms as the player explores to try to guide it through the goal and prevent softlocking.

When the player requests a room, chose the room and then, optionally, an enemy to go on that room.

Sorry it's color-dependent; the player first needs to get to the room on the left to open the doors, then the room on the top right to defeat crabs, then the room on the bottom to unlock the final boss fight up top.