Okay, someone posted a mesage that you could use any regular game cart for a donor cart. This includes games with or without saves. But after several visits to the store, I found this is not the case. Carts/Carts that cannot be used that I tested: Atari 10 in one Dig Dug Spiderman Whack a Mole Cart that does work for me: New Super Mario Bros (Ironic for me, cause thats the game I needed a donor cart for. But it also works as a great donor cart for other games. I got it for $30 used from ebgames.