I have IU but haven't played it yet. Wish I could help you out.
Ninja Blade is a good rental but very little to no replay value. I loved the game very much, I was a ton of fun, but do yourself a favor and rent it instead of buying it.
I would also suggest Castle Crashers as a good use of your 1600 points. I think it may use up 1200 of them, but it is well worth it. Very fun to play with friends over.
If you are a fan of the art style of game like Alien Hominid (Also on XBLA) or Swords and Soldiers (WiiWare) you should have very little trouble getting into this excellent title.
iPhone = Great gaming device. Don't agree? Who cares, because you're wrong.
Currently playing:
Final Fantasy VI (iOS), Final Fantasy: Record Keeper (iOS) & Dragon Quest V (iOS)
