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How to activate CD-keys, digital keys, game keysAbout Promethium
The Promethium armada is headed to Earth, leaving a toxic trail of destruction in its wake. Commander Braybrook, it is your mission to take up the experimental deep space fighter and stop the armada before it reaches us - YOU ARE OUR ONLY HOPE!
INSPIRED BY C64 AND ARCADE CLASSICS
Inspired by classic Commodore 64 and arcade games, Promethium is a hard-as-nails retro inspired side-scrolling shoot-em-up that takes place over numerous levels that get harder and harder. If you’re after a nice calm casual game, this isn’t it!
Gameplay
Fly left and right over the Promethium armada ships. They have shield generators protecting them. Hover over a shield generator to hack and disable it. Once all the shield generators are disabled a self destruct code will be sent to the armada ship causing it to explode. Be careful though, the armada ships are guarded by a fleet of fighters!
Power-ups
Destroy enemy ships and collect the power pods they drop. These power pods are like cash, they allow you to buy power-ups.
The available power-ups are displayed at the bottom of the screen. The power-up you can buy is highlighted in orange. Every time you collect a power pod the next power-up becomes available to you. Some power-ups are single use, some are multiple and some are timed. Experiment to find your perfect combination.
Controls
Promethium can be played on a joypad or if you're really brave and have the reflexes of a Ninja Cat then you can use a keyboard. I'd really recommend a Joypad though, this game is tough enough as it is.
Use any analog stick or the d-pad to control the experimental fighter, or in keyboard mode use WSAD or cursor keys to fly.
You can fire using any of the triggers, bumpers or the 'B' button on Xbox 360 or Xbox One controllers and the 'O' button on the Dualshock controller. If you are in keyboard mode you can press the space bar to fire.
You can buy the current power-up by pressing the 'A' button on Xbox 360 or Xbox One controllers and the 'X' button on the Dualshock controller. If you are playing using a keyboard then any key other than WSAD, Space or the cursor keys will allow you to buy the current power-up - I'd suggest the return key is a handy one.
Game Specifications
- Single player
- Windows
- Mac
- Nintendo Switch
System Requirements
Windows
Minimum
- OS *: Windows 7/8/10 (64-bit OS required)
- Processor: Intel Core i5-2300 2.8 GHz, or equivalent.
- Memory: 8 GB RAM
- Graphics: NVIDIA GTX 550 Ti 2GB, or equivalent.
- DirectX: Version 10
- Storage: 2 GB available space
Recommended
- OS *: Windows 7/8/10 (64-bit OS required)
- Processor: Intel Core i7 4790 3.6 GHz, or equivalent.
- Memory: 16 GB RAM
- Graphics: NVIDIA 970 GTX , or equivalent.
- DirectX: Version 11
- Storage: 2 GB available space
macOS
Minimum
- OS: 10.x
- Processor: Intel Core i5-2300 2.8 GHz, or equivalent.
- Memory: 4 GB RAM
- Graphics: AMD Radeon R9 M390
Recommended
- OS: 10.x
- Processor: Intel Core i7 4790 3.6 GHz, or equivalent.
- Memory: 8 GB RAM
- Graphics: AMD Radeon R9 M395X 4096 MB
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Price History
Frequently asked questions about Promethium
What is the cheapest price for Promethium Steam key?
The cheapest redeemable Steam key currently listed is $7.99 at Steam. Prices were last checked on November 13, 2026.
View key offersWhat is the difference between key and account offers for Promethium?
Gamescade currently lists 2 redeemable keys and no account offers. A key is redeemed on your own account, while an account offer provides access to a separate account containing the game.
View key offersWhat are the PC system requirements for Promethium?
Minimum PC requirements for Promethium include an Intel Core i5-2300 2.8 GHz, or equivalent. CPU, 8 GB RAM, a GPU with NVIDIA GTX 550 Ti 2GB, or equivalent., and 2 GB of available storage. See the full requirements below.
What is the Promethium release date?
Promethium was released on August 18, 2017.
Is Promethium single-player, multiplayer, or co-op?
Promethium is listed as a single-player game. No multiplayer or co-op modes are currently listed.
Where can Promethium offers be activated?
Current Promethium key offers can be activated on Steam. Check the retailer page for region restrictions before buying.
Which platforms have active Promethium deals?
Gamescade currently lists active Promethium deals for PC.
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