Merge the crystals and protect your front line!
Click your Level 1 Crystal to the other to merge a Level 2 Crystal.
Merge your Crystals to a higher level and move your Crystals to the Turret Grids fight against the Zombies.
It will be a challenge for you when your reach higher levels.
The Tower Defense game (TD) is endless - fight against infinite number of
waves for as long as you can!
And we will offer more exciting FREE events for you soon！
9Apps 4.9
