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Sphere Invasion

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About Sphere Invasion

Sphere Invasion is a sci-fi tower defence game. You build roads for invading spheres and use seven unique towers to destroy them. Choose how to attack: slow enemies down, strike them with powerful missiles or electrocute them with a Tesla tower. The game includes 12 enemy types and many hours of gameplay.

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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