I downloaded the AA army demo, and Timeshift demo.

The AA looks like the most blatant ripoff of GRAW possible. I heard the same dev team is doing that, but still.

And Timeshift, looks pretty darn similar to Gears of War. In the ammo/guns aspect though. I havn't played the game yet.

Games are starting to rip things off from each other. Sometimes it works, sometimes it dosn't.