Anomaly Protocol

Anomaly Protocol

Oriland · 2025 · Horror, Adventure, Survival, Multiplayer, Online Co-Op

PC
Mostly Positive77% · 30 📉 Recent reviews down 64%
Best price 55 All-time low
$2.99-40%
$4.99⭐ lowest tracked
Steam Buy at Steam

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Standard Edition · Steam
-40%
$2.99
$4.99
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About Anomaly Protocol

No one has yet been able to complete this Brutal 10-Day Cycle! Everything is in your hands. - Orilande

Anomaly Protocol is an online co-op survival and horror game for up to 4 players. Mission: Collect valuable relics from dark, ever-changing underground labyrinths, process these items in the surface grinder, and send them to our base in space via rocket.During the day, you must descend into underground dungeons filled with deadly dangers. While searching for valuable items, you will face not only the darkness but also lurking threats within. Be tactical; watch your back using the mine systems you set up. But watch your step, because you or your teammates can step on the mines you planted just as easily as the monsters can!

- Operate the Base and Complete the Mission
If you manage to survive the underground, quickly transport the collected loot to the grinder. Load the processed materials onto the rocket and send them to the base in space. You will earn rewards for every successfully completed shipment. Your rewards will be delivered to you via a special vehicle.
- Go on the Defense When Night Falls
Pay attention to the time you spend underground; a warning siren will sound when night falls. When the sirens start wailing, the outside becomes swarming with creatures. Immediately take shelter in your base, connect to the computer terminal inside, and take control of the base's heavy weapon systems. Fight to survive the night and protect the base.- Upgrade Your Character
Strategically use the money you earn for every item sent to the space base:
  • Skills: Access the "Character" tab from the computer in your base to unlock new skills that will prepare you for the increasingly difficult days ahead.
  • Cosmetics and Customization: Don't compromise on your style while braving the hardships. Use your earnings to buy brand-new costumes and various distinct headgear for your character.
- No one has yet been able to complete this Brutal 10-Day Cycle! - Orilande
For rookie teams embarking on the adventure, the radiation level is kept stable during the first few days. However, do not get complacent; after day 3, the rules of the game get tougher and you will face the real nightmare. For every new day you and your team manage to survive, you will earn a Steam Achievement and prove your endurance.Gather your team, descend underground, fire the rocket, and protect that base at all costs!

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended May 1, 2026
Dev is active and working with the community to improve the game.
1 found this helpful
Recommended Dec 27, 2025
It honestly blows my mind that this game was developed by just one person and still manages to be this polished and way beyond expectations. The first 90 minutes genuinely shocked me — I really wish I had discovered it earlier and started playing sooner. Better late than never! Visually, the game is very satisfying and never feels awkward or out of place. I hope the map designs will continue to improve and expand over time. The sound design is absolutely phenomenal. In many moments, it delivers the horror and tension so well that I was genuinely scared to move forward and continue the level LOL. I literally got goosebumps! The physics and mechanics also exceeded my expectations by a huge margin. The camera sway while running, the hidden mini-games, and the secret collectibles are all very well done and charming. I truly hope this game — and many other indie projects like it — continue to reach incredible heights. 90 minutes wasn’t enough; I’m already impatient to spend hours playing this!
1 found this helpful
Recommended Dec 22, 2025
Best Multiplayer Game
1 found this helpful
Recommended Dec 17, 2025
Grafics quality is quite good, and the game mechanics are fun and sufficient. It’s a game that gives off Escape the Backrooms and Lethal vibes—one where you can have a great time with your autistic group of friends and get genuinely scared out of your pants. I recommend it.
1 found this helpful
Not recommended Jun 19, 2026
poorly made, sorry if its a single dev but. The truth hurts, so does my wallet when i buy games like this
Recommended Dec 30, 2025
its a good game with your friends

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