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 a 5.1 channel surround mix as well as 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.