Use marines and heroes to defend against wave after wave of spawning invaders in this turret defense style strategy minigame.
Object: To prevent all enemy units from reaching the blue Xel'Naga Tower.
- Send your marine to a bunker to gain control of it. Click again to enter.
- You will receive one additional marine every 10 kills.
- You will receive one upgrade selector every 20 kills.
Tip: Damage upgrades for marines can be purchased at your Engineering Bay.