You are playing A.R.C.S.
Defend your fort against waves of evil aliens that are hell bent on wrecking you and also eliminating all humanity. Do whatever needs doing to outlive your last stand. Arm your males and your mech suite fully upgraded by selecting from a number of new guns, armor and capabilities. Be cautioned because the enemy will evolve and do their upmost to overrun you.
How to play:
Make use of the mouse for those controls in game.