Manomio (the developers of Commodore 64 emulator) have released an update onto the App Store for their Commodore 64 emulator not too long ago. This update includes:

* NEW – Lots of new games, including Last Ninja series, International Karate, Armalyte and Druid
* PLEASE NOTE: these will activate over the next few days when approved by Apple
* 3 new FREE titles already available
* Follow us at twitter.com/manomio for info on when they are released
* IMPROVED – Upgraded to OpenFeint 2.5
* IMPROVED – Reimplementation of control layout system, to support the complex controls scenarios for games like The Last Ninja
* IMPROVED – Display OF notifications at top rather than bottom
* IMPROVED – Removed bottom bar in full-screen landscape to prevent obscuring screen in games like Wizball
* NEW – Fixed-mode joystick in landscape mode, automatically selected for specific games
* NEW – Option to force fixed-mode joystick in landscape mode for all games
* FIX – Borders correctly drawn in landscape (Wizball)
* FIX – Corrected dead zone area at side of screen in landscape, rendering controls unresponsive
* NEW – Added grouping to In App Store to separate downloaded / purchases
* IMPROVED – Hi-res icons added for retina and iPad displays
* NEW – Option to adjust dead zone / sensitivity of joystick
* IMPROVED – Shop now separates downloaded games

Currently there’s no iPad specific version in the App Store and I’m not sure if one is in the works, however, PocketFullOfApps will let you know if a iPad version is released or any updates on it.  At the time of this writing, not every new game is available in the in-game store, apparently the problem lies on Apple’s end as of now.  The developer, Stuart Carnie, has stated that he contacted Apple to fix the situation, and is hoping to have the games become available in the next few days.

Commodore 64 on the App Store.