Games like Cepheus Protocol: Project Fenrir
If Cepheus Protocol: Project Fenrir is your kind of game, the closest matches are DECAYED, BunkerZ and Rotfront — picked from the ranked list below. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.
Get personalized picks →About Cepheus Protocol: Project Fenrir: In Cepheus Protocol Project Fenrir, players battle relentless zombie waves as elite Fenrir operatives, mastering Arcade Time Attacks and intense Horde Defense Missions with strategic weaponry and tactics. Dive into exhilarating chaos.

Players who liked Cepheus Protocol: Project Fenrir also play
Steam players who put hours into Cepheus Protocol: Project Fenrir also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.
DECAYED
WHY THIS
Top pick for Cepheus Protocol: Project Fenrir fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Cepheus Protocol: Project Fenrir.
Taking the place of a Green Beret, you will single-handedly witness the world fall, following the events of a failed search and rescue mission. Barely making it out with your life, you will witness pure chaos unfold, as you soon find yourself within an undead hellscape.
BunkerZ
WHY THIS
Second-strongest match for Cepheus Protocol: Project Fenrir fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Cepheus Protocol: Project Fenrir.
Claymation-inspired WWI trenches meet explosive co-op mayhem. Hold the bunker as a Rifleman, Medic, Engineer, or Machine Gunner. Fight back with WWI-inspired weapons, shovels, and flamethrowers, then launch undead sky-high with explosives. Survive solo or squad up with friends.
Rotfront
WHY THIS
Third-strongest match for Cepheus Protocol: Project Fenrir fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Cepheus Protocol: Project Fenrir.
Rotfront is a singleplayer FPS set out in the state of Washington in the year 2034. Infiltrate as a lone Operator, purge infected areas, kill as many Rots as possible and unlock weapons as you level up and grow stronger.
Survive the Horde
WHY THIS
Ranked #4 for Cepheus Protocol: Project Fenrir fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Cepheus Protocol: Project Fenrir.
Face overwhelming hordes of the undead in a hyper-realistic post-apocalyptic world. Build defenses, wield devastating weapons, and unleash powerful abilities as you tear through swarms of zombies in this adrenaline-fueled first-person survival shooter.
WAR OPERATION™ : Full Contact
WHY THIS
Ranked #5 for Cepheus Protocol: Project Fenrir fans by collaborative filtering across millions of Steam libraries. Shares Action and Early Access with Cepheus Protocol: Project Fenrir.
Iraq, April 2003, in the midst of a frighteningly intense confrontation. Iraqi army against the U.S. Marines, take your class, your weapons and run through Baghdad streets, near Firdos Square, frozen in the days of Saddam Hussein's regime. A unique and exceptional experience never seen before.
DEADFALL
WHY THIS
Ranked #6 for Cepheus Protocol: Project Fenrir fans by collaborative filtering across millions of Steam libraries. Shares Action with Cepheus Protocol: Project Fenrir.
Fight alone or with friends in a brutal horror wave-survival experience. Survive against endless waves of terrifying infected in this high-difficulty horror shooter. Play solo or with friends, unlock devastating weapons, discover secrets, and see how long you can endure the nightmare.
ActionSteam ↗Zombie Army Trilogy
WHY THIS
Ranked #7 for Cepheus Protocol: Project Fenrir fans by collaborative filtering across millions of Steam libraries. Shares Action with Cepheus Protocol: Project Fenrir.
The cult horror shooter series comes to an apocalyptic conclusion with an epic new third chapter, a heart-pumping new horde mode, and remastered editions of the best-selling Nazi Zombie Army 1 & 2.
Aliens: Fireteam Elite 2
WHY THIS
Ranked #8 for Cepheus Protocol: Project Fenrir fans by collaborative filtering across millions of Steam libraries. Shares Action with Cepheus Protocol: Project Fenrir.
This is a fight for survival. Xenomorphs swarm in overwhelming numbers. Every room could be your last.
Free alternatives
Free-to-play games that recommended players of this title also tend to enjoy.
Ultimate Custom Night
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Cepheus Protocol: Project Fenrir.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
Indigo Park: Chapter 1
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Cepheus Protocol: Project Fenrir.
Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.
STRAFTAT
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Cepheus Protocol: Project Fenrir.
STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.
Counter-Strike:Global Offensive
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Cepheus Protocol: Project Fenrir.
Counter-Strike:Global Offensive (CS:GO) expands upon the team-based action gameplay that it pioneered when it was launched over 2 decades ago. CS:GO features new maps, characters, weapons, and game modes, and delivers updated versions of the classic CS content (de_dust2, etc.).
Iron Snout
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Cepheus Protocol: Project Fenrir.
Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.
The Lab
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
DORONKO WANKO
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Casual with Cepheus Protocol: Project Fenrir.
『DORONKO WANKO』 is a DORONKO Action Game. In this game, You can become a cute, innocent Pomeranian, make your master's home messy and dirty. "Will the master be angry with me?" Don't worry. Because you are a sweet doggie.
Landfall Archives
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Cepheus Protocol: Project Fenrir.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
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Head-to-head comparisons
Frequently asked about Cepheus Protocol: Project Fenrir
- What games are most similar to Cepheus Protocol: Project Fenrir?
- Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Cepheus Protocol: Project Fenrir are DECAYED, BunkerZ, Rotfront.
- Who developed Cepheus Protocol: Project Fenrir?
- Cepheus Protocol: Project Fenrir was developed by Halcyon Winds.
imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Cepheus Protocol: Project Fenrir.
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