Kind of a neat little squares Allosaurus flash game on BBC. You don't get to really see any detail, and some minor items aren't supported, but it's pretty cool, really. Numbers and strategy. Don't wander too far from mom at the start.
http://www.bbc.co.uk/sn/prehistoric_life/games/big_al/
http://www.bbc.co.uk/sn/prehistoric_life/games/big_al/