Defense Grid: The Awakening

A tower defense game in which you'll have to protect the energy cores from being stolen. Tower building is limited to certain platforms where you can place 1 of 10 different upgradeable towers. The towers cannot be destroyed by the enemies. The placement of the towers is the key to progressing in this game, because each tower has its advantages and disadvantages. During the game you will fight against 15 different "insectoid" enemies that have different abilities, such as stealth, speed, armor, shields, etc. The invaders can carry 1-3 power scores when they reach the power plants and try to escape.