Build towers from the same group to raise a total damage. Each group of towers increases something special for all groups.
InstructionsWASD/Arrows for moving hero, 1-9 Mouse_wheel - changing weapons, rftgyhuji - shortcuts for building towers, P - Pause, Space - highlight hero.
-/+ - changing speed of game, Holding Shift - makes game faster.
If game is to tall or widht - just use F11(fullscreen).