Features 3 large open world maps set in differe. There are many different kinds of aliens to fight in various environments, as much as weapons and items to find. Complete the story-driven levels by collecting gas cans and defeating boss aliens to unlock upgraded weapons and perks to achieve the maximum fire-power, or play the survival game mode and try to hold on for as long as possible. Jump into the action and battle your way through hordes of aliens from canyon deserts to tropical islands.
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