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Extreme Reaction

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About Extreme Reaction

Extreme Reaction is a reaction-time testing game with multiple test modes. Each mode explains how its test works and lists precautions. Every mode has its own leaderboard, recording reaction times from players around the world, where you can track your ranking as you test your reactions.

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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