The Legend of Zelda Twilight Princess, Gears of War 2, Grand Theft Auto San Andreas, Super Mario Galaxy, Modern Warfare 2, No More Heroes, Batman Arkham Asylum and World of Warcraft.
Every Counter Strike game, World of Warcraft, Super Mario Smash Bross Brawl, Mario Kart and Batman Arkham Asylum
BRAID It was an amazing xbla game with beautiful graphics and amazing gameplay, messing around with time and such to complete cool puzzles. It would be perfect on the Ipod/Iphone
Oblivion or Fallout 3...Ravensword is the closest so far. Every. Single. LucasArts. Point-n-Click. Adventure. If it's in SCUMMVM, put it on the app store. Would also like a nice Nintendo title or 10 however there would be a direct conflict of interest there.
Ok a more realistic idea would be castle crashers, love that game, best xbox live arcade title by far
runescape (its definitly possible for this to come to idevice). many people critisize it for its basic (and somewhat primitive graphics) but the game is a freaking 3d browser based rpg made in java. its the only game of its kind and would be perfect on ipod touch. the backstory is amazing and the point and clickish type gameplay would be perfect for idevice. and even though i now play WoW if this came out for idevice it would be perfect just so i can a real mmo on the go without taking my laptop with me check it out at runescape.com just to realize it is a PERFECT fit for the idevice
also how about a real version of portal (the best puzzle game ever) i mean v is for vortex (and shift another portal influenced game) are amazing but i want the full 3d awesomeness of portal. and the controls could be really good too. it could also maybe be a free game with downloadable stuff. or like what if their was a valve app where you can buy different valve games via in app purchasees. like counter strike or half life (as well as portal). (simplified graphics for sure though)
Too Many KOTOR (star wars) in the style of dungeon hunter or the open world part of avatar, Legend of Zelda ( the real one not generic Japanese RPGs) Fallout 3 with less quality obviously ....... Halo ( woops gameloft already did that) oh yeah Super Mario Bros. !!!!