Single-player games like ZERO PROTOCOL
Below are 16 single-player Steam games similar to ZERO PROTOCOL, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like ZERO PROTOCOL page.
Ranked picks
- 1
Fear The Timeloop
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
Sheriff James Cooper is slowly bleeding to death in an unfamiliar hospital. But the moment his life ends, everything starts over. He has fifteen minutes to break this endless cycle, uncover the truth, and find a way out before it's too late.
- 2
You Will Die Here Tonight
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
Immerse yourself in retro top-down visuals as you face the horrors of Breckenridge Hall through intense first-person combat. Scavenge, solve puzzles, and upgrade your gear. Do whatever it takes to survive—but remember: You Will Die Here Tonight.
- 3
Among Ashes
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
Among Ashes is a terrifying first-person survival horror game. Your friend has sent you a link to a game that someone posted online, but as you play you quickly realise that something is terribly wrong. Whatever you do… K̴͉͚̗̅̃̄E̷͓̤̺̊͠E̴̤̰̿̽P̴̠̳̀́ ̴̨̮̭̕̚P̷̠͇̳͐̓̀L̶̹̔Ả̷̧Y̵̘̺͆̓Ï̸̻̏͂N̷͙̯͊G̵͖̹̠̽̿
- 4
Blood West
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action with ZERO PROTOCOL.
Weird west legends meet eldritch horror in BLOOD WEST, an immersive stealth FPS. Become the Undead Gunslinger, doomed to roam the barren lands until he manages to purge their curse, freeing his soul. 3 varied scenarios, perk-based character progression, and 20+ hours of gameplay await you!
- 5
Crow Country
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action with ZERO PROTOCOL.
The year is 1990. It’s been two years since the mysterious disappearance of Edward Crow and the abrupt closure of his theme park, Crow Country. But your arrival has broken the silence, Mara Forest. If you want answers, you’ll have to venture deep into the darkness of Crow Country to find them…
- 6
Silver Pines
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
Silver Pines is a survival horror metroidvania set in small town America. Fight nightmarish terrors and solve puzzles, while carefully managing your scarce resources as you uncover the mysteries that could hold the key to redemption.
- 7
Static Dread: The Lighthouse
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
Lovecraft meets Papers, Please. Play as a lighthouse keeper and guide ships safely into the harbor using your radio. Survive the presence of something impossible, and don’t let the shadows consume you!
- 8
Stygian: Outer Gods
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action with ZERO PROTOCOL.
Dive into a hostile world that challenges your very existence, in this survival horror game with RPG elements. Unravel a thousand-year-old mystery, risk your sanity and face the Outer Gods with your skills. Every bullet and every decision counts now, are you up to the task?
- 9
Resident Evil
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
The game that defined the survival-horror genre is back! Check out the remastered HD version of Resident Evil.
- 10
System Shock
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
A first-person fight to the death in the depths of space!
- 11
System Shock 2: 25th Anniversary Remaster
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
System Shock® 2: 25th Anniversary Remaster is a genre defining experience that established innovative game-play mechanics that are a staple of the FPS and RPG genre today. Survive the wretched corridors of the Von Braun. Your training has prepared you for this.
- 12
SILENT HILL 2
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
Investigating a letter from his late wife, James returns to where they made so many memories - Silent Hill. What he finds is a ghost town, prowled by disturbing monsters and cloaked in deep fog. Confront the monsters, solve puzzles, and search for traces of your wife in this remake of SILENT HILL 2.
- 13
REPLIKATOR
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
In this twin stick roguelite shooter, you play as one of the galactic mercenaries, explore a mysterious scientific complex and uncover the secret of the REPLIKATOR project.
- 14
INSPACE 2980
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
INSPACE 2980 is a stylish and dynamic SHMUP from the 16-bit era of games consoles and arcade machines. Take part in an exciting adventure and save the galaxy! Once again!
- 15
Iron Dungeon
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action with ZERO PROTOCOL.
Iron Dungeon combines a twin-stick shooter, a 2d platformer and a roguelite. Explore a dangerous underground complex in search of dozens of weapons, gadgets and upgrades to find a way to the surface and find out if there is still life on Earth!
- 16
WATERPUNK
Single-player alternative to ZERO PROTOCOL — playable solo, no multiplayer required. Shares Action and Adventure with ZERO PROTOCOL.
A roguelite action game inspired by the legendary Enter the Gungeon and Nuclear Throne, set in a post-apocalyptic aquatic world. Shape your strategy by choosing which abilities shine by day and which awaken at night.