The listing, Gun Metal - GamersGate Key has ended.
Winner gets a GamersGate key for the game Guilty Gear Isuka.
For more info check this site:
http://www.gamersgate.com/DD-GUNM/gun-metal
About the Game:
The Havoc Suit, a prototype combat vehicle, remains the only hope to save civilization from a tireless enemy. Standing 10 meters tall, with an arsenal of devastating weaponry and the ability to transform instantly into an agile jet, only this formidable battle machine has the potential to halt the invaders!