Any Zelda (over 1500 for Twilight Princess).
Call of Duty 1 (also over 1000)
Modern Warfare 2
Europa Universalis 3
Fallout 3
Oblivion
Morrowind
Mass Effect
Runescape (over 1000 once again)
Half-Life 2
Resident Evil 4
Super Mario Bros.
Mario 64
Mario Sunshine
Donkey Kong 64
Civilization 3 and 4
...I've got a lot of time on my hands...