Acting as a prequel to the original, Gemcraft Zero tells the story of a wizard who has become so entangled in his search for the fabled Gem of Eternity that his colleagues have cast him out. Any fan of tower defense games shouldn't miss this one, but even those who may not normally be interested in them should at least give it a try.

Gemcraft brings a lot of innovation to the tower defense genre, quite an accomplishment considering how crowded it already is. The new gameplay mechanics create a lot of strategic depth, and the game adds replay value by keeping track of your high score for each level, allowing you to go back and replay them for much higher scores once your wizard has leveled up and is more powerful.