Defend your Orbit by building up an impenetrable stronghold and hold back the enemy waves! Prove your shooting and defense building skills in 34 challenging levels! Tips Focus on staying alive rather than chasing down every enemy; Your Orbit has 40 lives and can be easily repaired, while you only got 3. Only killing will earn you money; so don’t just build walls and let the enemies collide, you will soon run out of money.Build strategically; build non-permeable walls under your turrets, if you’re afraid of shooting them.
Move: Move Mouse; Shoot: Left Mouse; EMP: SPACE; Pause: P; Mute: M; Rotate building: SPACE;Play the tutorial for more information!