Gemcraft Labyrinth

One of the best tower defence game!

How to play:
Click on spell buttons, click to place buildings, drag gems to where you need them. Everything can be done with mouse, but there are also some shortcut keys.

T: Build tower
R: Build trap
W: Build wall
A: Build amplifier

Q: 1x/3x game speed
N: Send next wave instantly

B: Throw gem bomb
U: Upgrade gem (duplicate & combine)
D: Duplicate gem
G: Combine gems
M: Extend mana pool
X: Refund mana from gem