I'm getting a lot of complaints about that too, but that's not how I intended the tool to be used. It's for marking the rooms with "?"s. So say a room branches into 3 different key rooms, North, East, and West. The room north of that room, which has a ?, would have the first key marked (NOT the room that actually has 3 doors), then one East would have the next key marked, and so on. That actually makes a lot of sense and if I'd thought about it I'd have probably realised that :lol: lols Yea, I will be adding in multiple resource/non key location markers, but the algorithm is probably gonna take a bit to implement and debug Will fix the GGS, thanks for that suggestion. I'll probably add a confirmation box, though.