Happy Otter Games have taken the Pixar approach when making Creature College, by trying to design a game that is squarely marketed at younger gamers but has more than enough strategy to keep grown-ups happy, and do you know what, I reckon they've pulled it off.
At its heart Creature College is a bidding game. You will bid on a variety of creatures available each round and at the end of each term (three rounds) you'll send your creatures off to battle. There's also a simple dice system that gives you a random choice of some juicy bonuses to acquire.
On the surface it's a very simple game, bid on the creatures you want, win points for being victorious in battle and get some extra points for a secret, set collection mission. But scratch beneath the surface and there's a lot more game underneath.