With the iPhone out, you get pretty board of the stuff there. Apple only allows web applications right now to run on it, so you have to find web game portals according to Joystiq like MacMost, iGiki or fun4phone
The best thing to do is to find sites liek iPhoneHacks.com that will unlock things like the ringtones which are locked or backgrounds like the Matrix running. Folks just love to customize and a Custom iPhone Background is the place to start at their wiki and also seee Hacktheiphone.com
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Hi,
I just spent the last month programming a games directory website that lists only free games. The address is:
http://iphonegamesdirectory.com
After my effort I'd really like to see people start using it, so please take a look and send me feedback.
Thanks,
-James