80%Excellent matchMazebound
83%54383% positive reviews, Very Positive across 543 reviews·Survival · Multiplayer
—







A survival horror set in a massive labyrinth. Play solo or 6-player co-op. Scavenge resources to craft gear and survive against terrifying enemies. Unlock unique abilities and find the exit.
Inferno Protocol
SteamINFERNO PROTOCOL takes place in a vast and deadly labyrinth that supports up to 6 players, spanning an enormous area roughly equivalent to 22,000 football fields. Every corner of this structure is different, confronting you with mind-bending situations. The most important rule to reaching the exit is simple: survive.
You don’t know why you’re here or who brought you. All you know is that something is deeply wrong with this massive structure. Curved walls, impossible corridors, and an unexplainable atmosphere… this place exists to test you. You are trapped in this cage with no map and no rescue team. Use every tool at your disposal to mark your path and escape this madness.

You aren’t the first to be trapped here, and you won’t be the last. The labyrinth is littered with notes, recordings, and frantic scribbles left by those who came before. Piece together the fragments to uncover the mystery behind the darkness and claim the legacy left for your survival.

The dark corridors aren't just filled with monsters. You will encounter other survivors who have endured here much longer—people who have figured out the rules. They aren't saviors; they are opportunities.
Bring them the rare parts or scrap you find. Bargain for the ammo, intel, or supplies you desperately need. Your money is worthless here; the only currency is survival.

Resources are scarce. Scrap metal and frayed wires will only get you so far. If you truly want to survive, you must do the unthinkable. When you take down a creature, don’t just walk away. Harvest what remains. Use their bones, armor, flesh, and organs to craft the gear you need. It’s gruesome work, but in the labyrinth, the most valuable resources are the ones that are still warm.

Find traps or craft your own. Fighting your enemies or trying to escape is not always the smartest option. At times, this vast labyrinth demands that you survive by setting traps for those who hunt you.

When you are cornered, do not reject the twisted gift the labyrinth offers you: Syringes.
Inject them when you find them. Some rewrite your genetics, granting abilities you could never have imagined.
But be careful. Not every syringe is a blessing. A wrong choice may turn you into a freak instead of making you stronger.

Falling is not the end. When the darkness swallows you, you are brought back to the Safe Zone. Recover, re-arm, and catch your breath within the structures you’ve built. But don’t get comfortable. In Inferno Protocol, death is not an ending—it is a lesson.
The labyrinth doesn't care if you are one or six. Enter alone to test your nerves in the ultimate survival horror experience, where stealth and caution are your only friends.
Or, gather a squad of up to 6 players to turn the odds in your favor. Combine your syringe abilities, trade resources, and cover every angle. Whether you go in as a lone wolf or a tactical team, the danger remains the same. The exit is waiting... do you have the guts to reach it?
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
All matches
Finding similar games…
MazeboundShares Online Co-op · Exploration · Realistic , adds Survival83% · 543 positive reviews80%Excellent match—
LabyrinthineShares Horror · Online Co-op · Realistic , adds Psychological Horror85% · 13k positive reviews79%Strong match—
The HighriseShares FPS · Exploration · Realistic , adds Crafting56% · 241 positive reviews75%Strong match—
Forsaken FrontiersShares Horror · Online Co-op · Exploration , adds Roguelike83% · 335 positive reviews77%Strong match—
MalumShares Online Co-op · Exploration · Realistic , adds Psychological Horror73% · 400 positive reviews73%Strong match—
Dark HoursShares Online Co-op · Exploration · Supernatural , adds Heist84% · 2k positive reviews75%Strong match—All matches
The best games like Inferno Protocol are Mazebound, Labyrinthine, The Highrise, Forsaken Frontiers, and Malum.
Match on: filter matches for Inferno Protocol by tag
Filters all matches
80%+Excellent matches
65%+Strong matches