6 Degrees to GEARS
Just like "6 Degrees to Kevin Bacon", In every game you can find something that was in Gears of War, like game-play, a character or the gear itself
In Shadowrun for the Xbox 360/PC, you can "bleed-out" just like in Gears of War. In Crackdown, in the russian guy's territory, in the city there is a giant hand holding a gear, a gear like in Gears of War. These are examples of 6 Degrees to Gears of War