I am the author of a card game called Hearts Net. Sadly, this site will not let me post links or email addresses, so you'll just have to search for it. It has always allowed local multiplayer games over wifi. Recently I have added bluetooth and Game Center multiplayer games. I need people to help me test. You will need an iPhone, iPod Touch, or iPad. You must not be afraid to install beta apps, which can be a tad complicated. If you're interested in bluetooth, your device must be running iOS 3.1 or later, and you must know somebody locally to play with. If you're interested in Game Center, your device must be running iOS 4.1 or later. I'll be handing out promo codes to people who make a sincere effort at this. Contact me at the email address shown on my website.