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3Xtinction

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About 3Xtinction

3Xtinction is an online co-op top-down shooter with tactical and strategic elements. After experiments on spiders go wrong, an outbreak devastates the world. You prepare for waves of infected by buying weapons, ammunition and constructions, then work to survive and complete missions.

Prepare for each wave

Before a wave, you can buy constructions such as turrets, decoys and barbed wire, then place them freely on the levels. The infected grow more numerous with each wave. You earn money to buy and upgrade weapons, with more than 15 weapons available, and to unlock stylish characters. XP tokens earned in the game can be spent to unlock skills.

Classes and missions

Choose from six classes, each with unique skills and equipment. The game has eight types of missions across seven locations.

Play alone or together

Online co-op supports up to two players, who must cooperate to complete missions. You can also play solo with bots.

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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