If you mean DSi ONLY games, you can't play them, no matter what. No flashcart can play in DSi mode, only DS mode. That means that, even with a DSi compatible cart and a genuine DSi to play it on, the rom will only recognize your DSi as a regular DS, like the Phat and Lite. This is because no flash-cart has managed to access the features of the DSi, like the cameras.