Space Base Generators

You are the commander of a space base to defend the alien threat.
The base consists of 6 generators that should not be destroyed (you can activate / deactivate energy shields on them by touching, using energy pool) but kept at maximum efficiency, otherwise the malfunction of the systems that they control.
The two main Oxygen Generators control the oxygen level: if it drops to zero, game is over!
When generators are damaged you can repair them, but this requires energy!
Choose the most appropriate weapon to defeat alien ships and face various threats in space.
The difficulty increases along with power of your base: you can select new weapons, boost auto-target system, fast repairs, better power shields, energy reserve, damage increasing, etc.
The Help file is consultable from menu.