Ippocalyptica
While the game itself left much to be desired (and several far better Warhammer 40,000 games have since been released), the Mechanicus soundtrack is easily one of the best synth-based video game soundtracks of the past decade because of its perfectly quasi-minimalist approach. A lot of soundtracks think that being “cinematic” means throwing everything but the kitchen sink at the listener, but good composers know better. Impactful and focused motifs and beats defeat superficial excess every day.
Favorite track: Noosphere.