Gem TD is a unique tower defense game which requires strategic maze construct in order to slow your foes, while your gems deal damage. At the beginning of each wave you are asked to place 5 gems. After placing the gems, you get to select one gem to keep, all unselected gems turn to removable rocks which serve as walls for your maze. The game includes 13 different recipes to craft special gems with special abilities. You can visit the shop to buy additional lives or buy luck, which will improve your chances of placing higher quality gems.
The game includes a trial allowing you play the first 10 waves. Gem TD is a sole developers effort to bring a version of the popular Warcraft 3 custom map to Windows Phone. You can watch the video below to see how the game was made.
See a demo video after the break.