Tomy Pinball and Mattel D&D are added to MAME and working. We'll need a volunteer for external artwork for the pinball game. The D&D boardgame however will be hard to play with or without external artwork. The artwork system would need to be more versatile. A developer could use the emulation to make an accurate simulator app though.
I'm working on MR Challenger and Spelling B now, some bit fixes here for the raw files: mrchallenger273raw_fix1.bin: - offset $0CF change $3A to $2A - offset $105 change $F2 to $B2 spellingb1984raw_fix1.bin: - offset $532 change $00 to $04 spellingb272raw_fix1.bin: - offset $656 change $9D to $9C - offset $8B0 change $9F to $9E