FREE: Sleep Attack [Steam Key]

The listing, Sleep Attack [Steam Key] has ended.

Enjoy an amazing new TWIST in Tower Defense! You control the layout of the battlefield, and you decide the paths your enemies follow! Build and place powerful turrets to attack invading enemies. Then rotate the battlefield to force foes down your preferred path of destruction. Be careful though, there are always multiple routes to control!

Combine tactical planning with strategic tower upgrades to slow, divert and damage your enemies. Carefully choose the placement and upgrade levels of your towers, as each turret possesses unique strengths and weaknesses. Simply swipe to change the routes your enemies take, allowing each tower to cause maximum carnage!

More info: http://store.steampowered.com/app/366210/
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This game works on mac too! Also includes steam trading cards

Good Luck!