I played dino run for a while, here's a demo since all the youtube videos were terrible and had some super dumb person talking or some awful music playing
http://www.pixeljam.com/dinorun/ I guess it's one of those free-to-play things because afaik all you get with the full version is a couple more levels, hats, and the ability to customize the appearance of your dino
it's a good gameplay concept and it looks and sounds good
the levels are semi-random, which is actually kind of annoying because you can't remember where to get dino egg #3, but it adds replay value or something I guess