Some computer games I have enjoyed:

Miner 2049er (Apple II)
Bill Budge's Pinball Construction Set (Apple II)
Star Blazer (Apple II)
Autoduel (Apple II)
Bard's Tale I+II (Apple II)
Airheart (Apple IIgs)
Tass Times in Tonetown (Apple IIgs)
Tradewars 2000 (BBS)
Wing Commander (PC)
X-Wing (PC)