A fast-paced action defense game with cool metal theme. 50 waves,9 upgrades,14 rewards,3 item props. Get more free coins with in-game sharing button(fb,twiiter).
Shoot robots as many as you can,do not forget upgrade! Press W/S（up/down） key to move.
Hold mouse to fire,release mouse to crouch.
Press W/S（up/down） key to move.nHold mouse to fire,release mouse to crouch.