We need to destroy this planet but the aliens are attacking our bomb, stop them! Defend your time bomb with powerful space turrets before the timer runs out in this epic tower defense game. Aliens will not be so friendly so stand your ground and make sure that they will not destroy your bomb before it detonates. Study your enemies and place your turrets in good shooting positions. Some of the aliens can jump high, dig through rocks, and evade bullets so make sure that you use the terrain in you advantage. Build generators to get more money faster and build metal walls to obstruct the paths of your enemies. Upgrade your turrets to increase damage and defeat those heavily armored aliens. You only have one job and that is to make sure that the bomb will detonate, do not mess this up! Good luck!