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Promethium

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About Promethium

Promethium is a challenging side-scrolling shoot-'em-up inspired by Commodore 64 and arcade classics. The Promethium armada is heading for Earth, leaving toxic destruction behind it. As Commander Braybrook, you pilot an experimental deep space fighter to stop the armada before it arrives.

Disable the armada ships

You fly left and right over armada ships, which are protected by shield generators. Hover over each generator to hack and disable it; once they are all disabled, a self-destruct code is sent to the ship, causing it to explode. The ships are guarded by fleets of enemy fighters, and the game spans numerous levels that become progressively harder.

Collect and buy power-ups

Destroy enemy ships to collect the power pods they drop. These pods act as currency for buying power-ups, which are displayed at the bottom of the screen; the currently available option is highlighted in orange. Each pod collected makes the next power-up available. Some power-ups are single-use, some can be used multiple times, and others are timed.

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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