Firaxis went ahead and released a demo of the fourth game in the Civilization series. The 314MB demo features a tutorial and 100 turns of a demo level. It's a good way to check out how the game will run on your machine but - let's face it - if you're a Civilization fan you'll already have the full version. First thoughts: whilst this game's no Age of Empires 3 (in terms of graphics) it's certainly very pretty. You can get the demo via Gamershell at the "Read" link below.