If an app is made for iPod, but isn’t universal, you can still play it on your iPad; just download it like usual, and when you launch it, the app will show up in its own little iPod mini-screen. If instead you want to play at full iPad size, you can do that, too. Just press the little “2x” button in the bottom right hand corner, and the app will be blown up to iPad size. Unfortunately, the 2x result is often very pixelated, because it still treats it as an iPod resolution app, except stretched out.
Have fun with your iPad!