Take a control of huge space vessel called Radiant Star. Protect your vessel from all out attack by enemies. Buy weapons and upgrades to resist enemy attacks.
You escaped the orbital space station and survived the explosion. Dr Rycroft left co-ordinates and now you need to investigate what experiments he performed on you. Beware though, he has surrounded himself with hi-tech defenses.
Defend your invasion forces from attacking ships while they retake solar systems from a malicious computer virus. Use your special vessel, the Nautilus, to manufacture ships to assist you in the battle.
Think you saved humanity...? Not so fast! On the eve of your glorious campaign to retake the galaxy, a new threat emerges. Fight the Creeper in a new environment while you excavate and build your industry of war.