This is the best 5 dollars I have spent on such a good game. Run's really smooth and will run smooth on Entry level PC's but even better if you have a Dual Core CPU. When I played the demo years ago it ran horrible making me think the retail would be like that, then finally realized the demo versions a lot of times need to be optimized and patched to work on all pc's properly. Same thing happened for me on Titan Quest. It Run so slow on the demo but when I got the retail I could turn everything up to high settings.