A retro-styled game from PixelJam. I've played it for quite a while.
http://pixeljam.com/dinorun/
The story is simple, you're a velociraptor when the big comet smashes against the ground. You are then to run away from the Wall of Doom, a massive storm coming at you. You run to an underground safe-house where you'll be safe.
Underway you can collect eggs, eat smaller creatures, climb over bigger dino's, get a ride from a flying dinosaur, jump on a real fast dinosaur and you can control it for awhile (untill you're thrown off)
Next to that is the stat system, you can upgrade your dino. And also collect achievements. There's even super eggs hidden troughout the game.
By the sound of this, it might not sound very fun. But just try it out, playing it is much more fun then watching it.
