Our friends at GameNTrain are giving away a copy of one of the biggest games this fall — Gears of War 3. So how can you win a chance at snagging a free copy of Marcus and Doms totally tubular last locust filled adventure? Just go over and ‘like’ the ever loving hell out of GameNTrain’s Facebook page and tell your friends. Once they reach 300 likes, it’s Gears of free time! You can find more details on the contest here.