AirForce Delta Strike

The game plot occurs in an unspecified time in the future, featuring sci-fi weapons, planes and environments. When OCC (Orbital Citizen Community), a space colony set on Earth's orbit, rebels and launches an invasion of Earth, EDAF (Earth Defense Allied Forces) launches a defensive campaign. EDAF is overwhelmed by the OCC's superior weapons and numbers early in the war, losing a majority of its conventional forces and is forced to enlist any militia forces to help, including the Delta Squadron, an ill-famed aerial strike group known as a "dumping ground" for disgraced or misfit pilots. Despite their differences, Delta Squadron's efforts allow the EDAF to turn the tide and liberate portions of Earth occupied by the OCC, earning them the attention and rivalry of the OCC's elite experimental squadron. As the tide starts to turn and as the Earth forces advance, they find out that OCC is not the major threat - an organization from Mars is planning to destroy Earth with the help of the orbital colony.