Gears 1 was you're in jail, then you're out of jail and kill space monsters. Gears 2 was you're in a military unit or something, then you kill space monsters, but there are a third breed of glowing space monsters. There was also an invisible robot in the second one that's always with you. Also the manwall with a soul patch blubbered a lot. Also a trucker fought a monster with a chainsaw staff. Also Cole Train hijacked the radio at one part lol hes so crazy.
Gears 3 looks as good. Reviews are pretty high if that's an actual metric for quality. I kinda want it.