No love for MiniGore in this thread? The iPad version is way better than it's iPhone counterpart, IMHO. It looks awesome on the larger screen. Plus, you don't have two-thirds of the screen obscured by thumbs.
Again, I noted this game, but it wasn't even close to being in the top 10. I actually preferred it on the iPhone...
All subjective, of course.
Wesnoth is pretty fun, after playing that some today, but it's lacking that polish to get it into the top 10 (so far). It's possible that might change, but the interface could use some work, with some of the commands being really small and more difficult to press than they ought to be...