In Combat: Task Force 121, gamers become part of the covert unit comprised of Navy Seals, Green Berets, Army Rangers and USMC Recon personnel tasked with thwarting a deadly group of rebels by putting a halt to their terrorist acts before U.S. interests are compromised. By working though 10 exciting single player assignments, gamers must battle their way, day and night, through a variety of environments including dense jungle, a shanty town, an oil rig, a refinery plant and an exotic island. Players can access authentic military weapons throughout the game including the M4 Assault Rifle, M203 Grenade Launcher, MK43 7.62 Machinegun and a .50 Cal Tactical Sniper Rifle.