The listing, Superstatic(steam key) has ended.
Superstatic is a top-down shooter where you're given the ability to possess and control your enemies. Using "copies", you're able to perform a variety of skills including killing enemies within a certain radius, chaining kills together based on your current combo, teleporting to your copy's position and more.
The story centers on an addict who desperately turns to a clinical trial for a new drug. The drug is said to enhance the user's psychological capabilities, but it instead gives him mind control. After discovering some documents, he realizes that he is scheduled to be terminated. Infuriated, he goes after the creators of the drug through their webs of lies and conspiracies.
The game also includes a level editor allowing you to make your own custom levels using your own graphics, maps, guns, conversations and enemies.
http://store.steampowered.com/app/375290