The Moon. Our closest celestial neighbor. A place full of mystery and strange things. That's right, there's more than just rocks and impossible challenges out there. A lone astronaut is about to learn that first hand, when he loses contact with Earth and begins an interstellar odyssey across the universe
Moon Mystery is a first-person shooter adventure full of puzzles, action, set on strange new worlds. The gray rocks of the Moon are just the first step on a great journey. Fill up your oxygen tanks, top up your magazines, and get ready for a long trip. You won't be seeing Earth for a while.
MYSTERY AND INTRIUGUE
Humanity's return to the Moon was no easy feat, requiring state-of-the-art technologies and Artificial Intelligence. Piece together what happened to the previous mission on the Silver Globe alongside the sole survivor, the AI computer. Our first permanent lunar base being the origin point for where everything went wrong. What happened? What do you need to prepare yourself against? Just why did we go to the Moon in the first place?
EXPLORING STRANGE NEW WORLDS
The Moon is one of the most hostile environments known to man. Put wits and platforming skills to the test while traversing treacherous landscapes and vast abandoned bases. Pilot multiple vehicles such as spaceships, radio-controlled cars, lunar rovers, and even a submarine to get through alien worlds and solve the many puzzles that await.
ADAPTING, IMPROVISING, OVERCOMING
While outsmarting puzzles and platforming through the environment is one thing… Dealing with malfunctioning robots stalking the corridors alongside other, more terrifying and mysterious foes, is another. Keep that gun loaded alongside oxygen bottles, you'll need it.
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2025-12-12
Earn More YXP and Unlock New Levels with YUPLAY
We are constantly working on new ways to reward our community and provide added value to everyone who chooses YUPLAY as their go-to destination for gaming content. Our most dedicated users deserve something special, which is why we’re excited to introduce the YUPLAY Loyalty Program.
To celebrate its launch, we’ve prepared an exclusive promotional event that gives you the opportunity to earn 50 YXP, helping you progress faster and improve your chances of unlocking higher loyalty levels.
Dive Into 2025’s Most Addictive Video Games – Part 1
It is already the month of December and 2025 is nearly done, however there have been some great titles all throughout the year and we decided to make a definitive list for some of the most addictive video games we got during the year! We separated it into 2 dozens of Steam games in almost all of the main gaming genres, so there should be something for everyone to enjoy on it! We hope you like it and let’s directly dive right in the action with the first part of our list!
Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
This game sometimes shows mouse, keyboard, or non-Steam-Deck controller icons
Some in-game text is small and may be difficult to read
This game's default graphics configuration performs well on Steam Deck
