Among the games being shown off on the Chillingo side of E3 was Mech, a, as you can probably guess, mech-based shooter. It reminded us a lot of iMech from back in the day, and I could see it being pretty rad in an arena filled with 8 people. Sadly, it doesn't demo too well when it's just two people bumbling around, but you can get the idea:
Mech is still in development and should be released later this year.
Mech Upcoming AppWatch Button Watch App