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.
Evil Aliens attacked our planet and you should stop them. You are the only hope for all Earth citizens. Your brave soldiers and powerful tanks waiting for your commands to smash those evildoers.
Your forces were out on a routine patrol and the undead were suddenly everywhere! Your forces were badly depleted in the conflict thus you must continue to do your job and keep the undead population under control until a solution can be found.
