StarDunk is one of my most favorite apps recently, ever since I covered it back for Daily App a little while ago. It's an amusing little 2D basketball game, made even more impressive by the fact that it juggles online multiplayer across the world -- as you throw baskets, you're also playing in real-time against other users, and competing with various powerups and stunts for as many points as possible. The game was also notable for being one of the first titles integrated into Game Center, back when that service first arrived on the iPhone.
But the app hasn't been doing as great as it could be, according to developer Godzilab -- first, they had some issues with piracy, and now they're saying that the game's just not selling as many copies as they'd hoped.
So the game has gone free -- kind of. You can pick it up right now in the App Store for free, and play ten games without paying a single cent. Once you've played those games, then you have the option to buy the whole app via in-app purchase for $2.99. That's not exactly freemium (it's more of a demo version), but at least players will be able to get a feel for the game and how it works before laying down their three bucks. Personally, I still recommend the game -- I bought it on my own and still enjoy a quick game (even though I usually land in the middle of the rankings). But if you've been waiting for a chance to try it out, definitely take advantage of the new model.