Play Here: Gem TD

With the ability to build anywhere on the map except on one of the six waypoints there are virtually an unlimited number of strategy options.

In this screenshot I tried a simple maze that covers the 2nd and 4th waypoints. In this system the creeps travel through your entire maze 4 times. You could make the maze much larger but with this system I never run into trouble against the ground units so I don’t bother.

Key Towers:

Dark Emerald Tower:

This tower is absolutely vital to any strategy. Other towers with slow effects (ice/poison) become ineffective at higher levels as creeps get a higher and higher min speed. This tower fully upgraded stops monsters for 2 seconds in about 1/6 shots. I suggest building 4-5 Dark Emeralds.

Silver Knight Tower:

I strongly suggest building a centralized silver tower as your first. These aren’t very deadly late in the game but they are key in getting you to that stage.

Blood Stone Tower:

These are very deadly mid level towers if you do not upgrade them. After you get 4-5 Dark Emeralds set up I would upgrade these the Blood Stones with the Emeralds. This makes for an effective late round combo.

Hidden Towers:

Great Opal:
I’m pretty sure you can build ‘great’ gems for each color but the Opal has been the only one I’ve managed so far and probably the most valuable. The has a huge aura that gives all towers in it’s range +50% attack speed!

Note:
I would like to see a new tower defense game that gives you the option to turn off missiles. It seems that this causes quite a bit of lag in almost every TD.