Heretic
Dark Forces
TES IV
M&M's Shellshocked
The ambient menu music from Mass Effect that sounds like Burzum's Rundgang Um Die Transzendentale Säule Der Singularität
Vice City
Lego Island
Jak II
Red Dead Redemption
Genji (beautiful world ambient)
Mass Effect 2
Medal of Honor Frontline (music by Michael Giacchino)
Ratchet and Clank Deadlocked
Rogue Squadron (basically MIDI renditions of original Star Wars film scores)
Secret Weapons Over Normandy (especially the theme from the Russian campaigns, music also by Michael Giacchino)
Ace Combat 4 (especially the track Megafloat)
Music from an indie TPS my brother was playing, similar to Vangelis' Blade Runner score.