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Demon Protocol

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About Demon Protocol

Demon Protocol is a retro arcade shooter in which you pilot humanity's last line of defense against an invading force of demons. Fight through 25 waves of increasingly dangerous enemies, collect power-ups and face four bosses.

Combat

Power-ups can improve your firepower and survivability. Multiple difficulty settings let you choose the challenge.

Arcade action

The game features a pulsing original soundtrack and a classic arcade feel with modern polish.

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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