I've been playing Emoticon Defense lately. Not the best tower defense I've come across, but amusing in it's own way.
You start with a plain smiley that you can upgrade. You can either upgrade it's level, making it more powerful or you can upgrade it's equipment, which includes tower type and two choices of accessories. This basically gives your tower a total of three specialties.
I like it, cause it is cute. :-P
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