The Quality Index champions the best Gameloft titles available on iPhone.
STP - "As part of our 50 Best Game Series on iOS, we’ve covered Modern Combat and Dungeon Hunter, both Gameloft knock-offs of popular console and PC franchises. Gameloft’s sincere flattery extends to the Halo series, which they have reverse-engineered like a piece of alien technology, bringing their own epic sci-fi first-person shooter series to mobile devices."
NOVA 2 from Gameloft is one of the most impressive games that came out for the iPhone. NOVA stands for Near Orbit Vanguard alliance. If you've played games like Halo, Portal or Crysis then you'd be very much at home with NOVA 2.
Gameloft has announced an upcoming sale for all of their premium titles on the Android Market. This includes N.O.V.A. 2 HD, Modern Combat 2: Black Pegasus, and Asphalt 6: Adrenaline, all of which usually retail for $6.99.