Crystal Defense

Neat! Less of a TD and more of a puzzle - You have to figure out what towers to place where and then pretty much let the wave run. Unfortunately, the mouse-over tower stats don't display correctly when paused, so you kinda have to memorise them. As a straight TD it's pretty basic and sucky, but with the puzzle aspect (intentional or not) it's quite fun.

awfully simplistic, with little in the way of descriptions of whats going on in the slightest.