Fight your way through 27 waves of Zykon alien invaders. Cleverly use 6 different towers that slow, stun and power burn to defend against enemies that heal, regenerate, split and fly.
Use your mouse to build towers and defend against Zykon invaders. You can change the game speed by clicking the "1X" at the top left corner.
P - pause
M - mute
TAB - cycle through towers
U - upgrade tower
ESC - dismiss selection
SPACE - show/hide enemies' bars and towers' levels
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