I would love to see OS X versions of two old favourites from the mid 1980's - Chuckie Egg and the 'Repton' series. I played both on a BBC for most of my childhood!
Its amazing to think that those machines had only 16K of RAM (up to 128K in the Master) and no hard disk and yet the games were BRILLIANT.
I've still got Repton 3 and many other games on 5 1/4" floppies for the BBC and I would love to play them again.
I've got a PC version of Chuckie Egg which I can play using Virtual PC (Classic only for me until I upgrade).
Dobbin.