Smiley TD Free

Smiley TD is an original and unique tower defense game. There is only one type of tower...except it has 8 different types of upgrades: Poison, Splash, Slow, Speed, Teleport, Instant Death, Gold, and Life. This allows you to choose exactly what types of tower you get, allowing for new strategies that you can't use in traditional tower defense games. All creeps start out as smiley faces, and, as they get hurt, become frowns. This method of showing hit points replaces the HP bars common in traditional tower defense games.

This is a free version with only one track and medium difficulty.