Thankyou!
I've thought about giving the map level buttons a number overlay like 1-1, 1-2, etc, just haven't gotten around to it. I spent alot of time on the music, the game was 'hollow' without the right background music. I'm glad you like them! RPR runs on a custom 2d collision engine, no physics, just hand typed code. I need to add in a distance check on enemy collisions, some things have this already. It's in my list of todo's.
and thanks for playing!!