3000 AD has released the demo for their futuristic 3D action game Universal Combat. The demo features five scenarios which are based on several game careers - including the brain freeze inducing, slack jawed producing, highly advanced Commander career.
They have also released an update (that will be superseded by the final patch later this week), which addresses a ton of AI tweaks, interface improvements, content and gameplay revisions, multiplayer enhancements, bug fixes, and more.