Is it possible to allow users on Facebook to play games? Could it be placed in an iframe? Thanks.
Hm, well there is a site that makes games in Unity, and has a plugin of the game on their sites page. I should think it would be possible, but not for using Facebook credits to buy add on content. Besides, Facebook has to approve your game in the first place.
You can run it in an iframe, and there’s no real reason it wouldn’t run in Facebook (although there isn’t any Facebook API integration currently). Look on your “My Games” page for an embed link that you can copy and paste into your own site.