The PC version originally launched in June 2007, following its Xbox 360 debut.

Combines on-foot combat with "Vital Suits" (large pilotable mechs).

The "Colonies Edition" (released 2010) is an enhanced version featuring new single-player modes, weapons, and maps. Technical Details & Availability

Players must manage a "Thermal Energy" (T-ENG) meter that constantly drains in the cold; energy is replenished by killing alien "Akrid" or finding energy posts.