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Lead an unlikely team of commando scientists behind enemy lines to fight Nazis, uncover arcane mysteries, and wield experimental technology to turn the tide of WWII in this real-time tactical stealth adventure.

Sumerian Six

Sumerian Six follows the Enigma Squad, a team of commandos composed of the world’s greatest scientists who combine their skills to conduct secret missions in their fight against the Third Reich. Together, you seek to thwart ex-member Hans Kammler's nefarious plans involving a powerful, mystical substance named Geiststoff.

Embark on a thrilling journey across multiple continents alongside allies such as the exiled chemist Rosa Reznick, Wojtek the Werebear, and the esoteric psychoanalyst Siegfried von Adelsberg. Dispose of your enemies by using each team member’s unique set of abilities inspired by their fields of expertise, and learn to master the art of chaining them together for devastating effects if you hope to be successful.

As you delve deeper into the Nazi plot, you’ll encounter occult-scientific weapons and ancient Sumerian artifacts linked to Kammler's machinations. A grim future awaits you should the Nazis be victorious, so do your best to prevent that dark timeline from coming true in this real-time tactical stealth adventure.

Demon Nazis
Led by Hans Kammler, a former member of your Squad, the Nazis tap into the occult to create the ultimate Wunderwaffe. Face off against heavily armed, mutated, and supernaturally charged forces, and put your strategic abilities and dexterity to the ultimate test.

Playful Violence Meets Super Science
Sneak your way around Nazi strongholds and dispatch the ever-present watchmen in a variety of ways before taking on the more serious threats before you. Combine your team's dynamic powers in creative displays of tactical might.

Travel the World
Inspired by real places and events, Sumerian Six takes you on a journey through an alternate history where folk stories and conspiracy theories are as real as the Nazi threat.

Minimum Requirements:

Requires a 64-bit processor and operating system
OS: Windows 10 x64 Bit
Processor: Intel Core i5-4670K / AMD FX-8350
Memory: 8 GB RAM
Graphics: GeForce GTX 780 / Radeon RX 560X
DirectX: Version 11
Storage: 20 GB available space
Additional Notes: Low Quality setting, in 720p, producing 30 FPS

Recommended Requirements:

Requires a 64-bit processor and operating system
OS: Windows 11 x64 Bit
Processor: Intel Core i7-6950X / AMD Ryzen 5 1500X
Memory: 8 GB RAM
Graphics: GeForce GTX 1080 / Radeon RX 5700 XT
DirectX: Version 12
Storage: 20 GB available space
Additional Notes: High Quality setting, in 1080p, producing 40 FPS

To activate the Steam key you've received, follow the instructions below;

First up, open the Steam client. (If you don't have it, simply click the "Install Steam" button here => Steam Store )
Sign in to your Steam account. (If you don't have one, click here to create a new one => Steam Account)
Click on the "ADD A GAME" button in the bottom corner of the client.
Then, select "Activate a product on Steam..."
Write down or copy-paste the activation key that you've received from %s in the window.
Your game is now visible in your library! Click on your "Library".
And finally, click on the game and select "Install" to start your download.