Star Trek Bridge Commander demo -

While on duty in a remote area of space, a nearby sun suddenly erupts, releasing a deadly blast that damages your ship, kills your captain, and threatens nearby colonists. Now you must take control of your ship and lead your crew to solve the mystery. Your mission is clear--discover the cause of the devastating explosion and prevent it from happening again. During the race you will battle the Cardassians, form an alliance with the Klingons, investigate the unpredictable Romulans, and reveal a secret plot that threatens the Federation itself.

In this game from Activision, you'll be able to take the helm, interact with your crew, and have every station of the bridge at your disposal as you command your way through over 30 different missions.

This demo of Bridge Commander contains the first three single player missions and Quick Battle.