this would be a good memory exercise

Ultima IV, V, VI (all time classics!)
Romance of the three kingdom I, II, III
Nobunaga's Ambition
Eye of the Beholder I, II
Cobra Mission (memorable..
Stronghold
Wolfenstein 3D
X-COM UFO Defense (replayed last year!)
Wing Commander : Privateer (memorable)
DOOM
DOOM II
Star Wars TIE fighter
Warcraft II : Tides of Darkness
X-COM Terror from the Deep
Command & Conquer
Simcity 2000 (this game finish-able?)
Quake
Civilization II (classic!)
C&C : Red Alert
Diablo
Master of Orion II : Battle at Antares (classic!)
HoMM II
Starcraft
Final Fantasy VII
Sid Meier's Alpha Centauri
Sid Meier's Colonization
HoMM III
Diablo II
Diablo II : LoD
Warcraft III
Disciples II : Dark Prophecy
GuildWars + all expansions (PvE portion)
Galactic Civilizations II
Space Rangers 2 (fun game)
Alien Shooter 2 : Reloaded (click fest)
HoMM V
The Witcher : Enhanced Edition
King's Bounty : The Legend
Torchlight

got some time, no money. got some money, no time. time and money mutually exclusive..