Defend the tower as aliens are in full force of attack. Upgradable. Destroy as many aliens as possible and earn more credits to purchase/upgrade equipments.
Guide your tank to trample your enemies before they reach your base. Change your force field to match the enemy's color before trampling him and collect their energy to unleash your tank's powers!
Defend your land from invading enemy troops. Build defensive towers along the road strategically choosing which type of tower to build, upgrade them in time and always be one step ahead of the enemies.
Build up your elevators and man the hallways as you protect your only corridor from the creeps. Switch elevators as you need more power and use your man to defend from extra large groups.
It is time to be evil and destroy the human world. Use your underground fortress to build a tower and emerge from the ground to cast the ultimate destruction spell. Be careful though! These puny little humans will try to stop you.
