Money or Meteors
From Halopedia, the Halo wiki
Money or Meteors is the fourth track in the Halo Wars: Original Soundtrack.
The track features a melody on ambient synth and digital notes, while accompanied by electric guitars and soft percussion. The melody shifts between ambient synth and digital notes before reaching a climax on strings. The piece ends with a reprise of the opening synth and digital notes.
The soundtrack's bonus DVD includes an alternate version, titled Money or Meteors (Arcadia Intro), featuring the addition of heavy percussive beats as well as a more prominent electric guitar and vocals.
The alternate version only plays in the beginning of the levels, except for Dome of Light, which opens with the track Just Ad Nauseam.