story
story casual- a short version approx 30 mins
story leaderboard- same as story with stronger aliens

< Commander: The star ship Hyperion received damage while traversing the asteroid belt. The shield generators were hit and the ship is returning to Mars for repairs.
The ship's defenses were also knocked out, making it the perfect target for the converging alien troopship. A temporary defens...

< Commander: Be prepared for a military nightmare. This station was designed to promote inter-connectivity and cooperation; a synergy of creative ideas and scientific what if's. When establishing your defense grid the invaders will take advantage of the stations layout and use another route. F...

< Commander: The aliens are attacking another unfinished station. The construction is automatic and in progress, and will not stop due to the attack. You will need to build your defense grid as the platform is being assembled. A small area has been made available for you to stage your defence....

< Commander: Lunar station CLXXII is your next assignment. The aliens are throwing many troops at this one. You will be kept busy. A long and winding path is advised, to slow down the attack and maximize the exposure to our weapons. >

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~...

< Commander: An important lunar facility is under attack. The station's defense system is dynamic and will provide more area for defenses as needed. The invaders are many and will need a constant pummeling, in order to be terminated. Take no prisoners. >
< Known as the "L T" (...

< Commander: A monitoring station in the Irish Archipelago has been targeted by the Aliens. The sea levels although elevated have been stable, submerging the lowlands on the western Irish coast creating the archipelago. Storm surges and violent seas have scrubbed the area of any evidence of ha...

4 Modes ( In order of difficulty)
Story
Story casual

< Commander: Charon was the ferry-man that carried the dead across the river Styx, on their journey to Hades and the underworld. The obol was a payment or bribe for Charon, for the crossing. The fare has been paid. Use what you can in order to dispatch the Aliens on the journey. >

~~~~...

< Commander: A williwaw of Aliens has descended upon Outpost 169. The outpost is situated along the coastal part of the southern Andean mountain range. Earthquakes and rising sea levels caused large areas of, once fertile, Chilean farmlands to become submerged creating a rugged and wild coastl...