Well done. M.U.L.E. is absolutely one of the finest games of the 8-bit era, and the Atari version is superior to the C64 version. If I could spare the cash, I'd buy an old Atari and four joysticks just to have a M.U.L.E. machine.

(Luckily, MAME runs Atari M.U.L.E. beautifully under Linux.)