This seems like a lot of fun! Only had time for a couple of games so far, but it plays really well :)
I converted it to GX4000 .cpr and it works well, but Fire 2 is set off a trap and Fire 1 is sign off a room. It would be cool if that could be changed for a cart version, as well as P to Pause :)
Happy to send you the .cpr version if you want it.