Controls

W and S: Scroll screen up and down.

X: Pause the game.

Number Keys 1-8: Train unit hotkey.

E,R,T,Y,U,I,O,P: Build Barracks Hotkeys.

Objective:

Defend your turf in each level by holding off the alien waves. When you can, mount an attack and destroy their base.

Earn skill points and upgrade your skills on the map screen

Tips

- Don't forget to spend skill points!

- Group your defenses together for the best chances.

- Snipers can attack all the way across the level, but don't do much damage.

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