As the Nintendo 3DS library is just now picking up, there's a number of games to check out for this holiday season, among them Sonic Generations, WWE All Stars and, of course, the Mario misadventures that are 3D Land and Mario Kart 7. However, even though these more popular titles guarantee good times, there's a chance you might miss out on the more smaller, compelling experiences. Like, say, Nano Assault.