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About Earth Space Defenders

Earth Space Defenders is a twin-stick spaceship game about battling alien ships and defending Earth from green alien smoke. You fight through short, arena-like missions made up of several waves of enemies.

Missions and upgrades

The game has 100 levels across 20 chapters, with missions telling the story of the battle against the green alien smoke. Completing a mission gives you an upgrade card. You can replay missions to earn more cards, but can select only one card from each mission. Mining asteroids is another way to get extra cards.

Play with a friend

You can play the same missions with a friend. Multiplayer supports local play with controllers and online play with Steam friends, and you can combine the two.

Frequently asked questions

Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.

Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.

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