(NHL Hockey cartridge was missing)
Just got a batch of 17 MD/Genesis carts from a friend, including FIFA International Soccer, Madden Football, and Earthworm Jim. Not a single one that doesn’t work :-) See the updated compatibility table here.
Using gens on a Windows machine, I ended up copying the ROMs to the hard disk, though, because otherwise the emulator would throw hundreds of “oh dear, yet another failed writing attempt”. Let’s see what can be done about it. (Edit: Fixed.)