In Fox vs. Duck, you are the duck, and you need to survive constant attacks by fox and fish alike. Like the best iPhone games, it's simple but addictive.
Your ducks get dropped down from the sky onto a pond populated by a hungry fish and watched over by a fox on the side. You tilt the iPhone to move the duck and get it off the pond and away from the fox. As the levels advance your enemies get faster and more objects show up on the pond, making life harder for your duck. There are also Xbox-style achievements and a global leaderboard.