I really liked this edition to the series, it feels very different and refreshing. With tower defence features and amazing environments as always. Violence is frequent but mild and animated. You fight alien and robotic enemies with a variety of weapons. Alien deaths result in green animated blood.
Other games in the series are so much better then this one. I am not saying this game is bad, but the others are more worth it, like for example, Tools of Destruction. That's a game I would recommend. :P