skyrim might be THE greatest soundtrack of all time

fallout 1 and 2 (and new vegas as it reuses the soundtrack) are really cool and eerie. fallout 3 and 4 are good too

i quite enjoyed the soundtrack for south of midnight

also, this next one isnt an official soundtrack made for the game but a collection of good songs. but madden 10 has probably the most ludicrously stacked soundtrack ive ever heard for a sports game