Mars 2180

[gorgse]

New tower defense game:

Mars 2180:

http://towerdefenseheaven.com/content/view-game?gId=14718&game=mars-2180

http://www.gamershood.com/14709/strategy/mars-2180

A tower defense game where you defend against invading martians. Turret upgrades become available based on an experience based system and stars you accumulate that upgrade a turret to a new model.

[Mistery]

Nice game
What I don't like so much is that there is a limit of towers, so that you have to sell old ones to create better ones.