Single-player games like Moros Protocol
Below are 14 single-player Steam games similar to Moros 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 Moros Protocol page.
Ranked picks
- 1
Katanaut
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action and Indie with Moros Protocol.
Katanaut is a fast-paced, Metroidvania-inspired action roguelite blending fluid combat and cosmic horror. Slash, dodge, and wield powerful abilities as you battle through a station sprawling with twisted, once-human horrors. Adapt, survive, and descend into the shadows to uncover dark secrets.
- 2
Deadzone: Rogue
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action with Moros Protocol.
Deadzone: Rogue is a roguelite FPS set in space. Blast through swarms of hostile machines, combine powerful augments and elements to forge your build, and grow stronger with each run — solo or in co-op.
- 3
CRUEL
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action and Indie with Moros Protocol.
A fast run and gun horror shooter with roguelike elements
- 4
Prodeus
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action and Indie with Moros Protocol.
Prodeus is a first-person shooter of old, re-imagined using modern rendering techniques and technology. Experience the quality you’d expect from a modern AAA game, designed with retro aesthetics and gameplay that invoke the tech-imposed limits of older hardware.
- 5
Void War
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Strategy and Indie with Moros Protocol.
Command an ancient starship and fight your way to the heart of a dying Empire. Fend off attacks from demented cultists, craven space pirates, and xenophobic Imperial soldiers. Discover powerful artifacts and use them to build your ship into a fearsome war engine.
- 6
Nightmare Reaper
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action and Indie with Moros Protocol.
Blast through a cursed nightmare solo or with up to 3 friends. A retro-inspired FPS where looter shooter weapons meets boomer shooter chaos and rogue-lite elements.
- 7
MOTHERGUNSHIP
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action and Indie with Moros Protocol.
MOTHERGUNSHIP is a bullet-hell FPS where you craft your own guns, fight gigantic bosses, and defeat a robotic alien armada that conquered Earth. Face off against overwhelming odds in brutal, non-stop combats where thinking on your feet is the only way to survive.
- 8
Void Bastards
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action and Strategy with Moros Protocol.
Inspired by BioShock and System Shock 2, Void Bastards is a revolutionary new strategy-shooter that will test your wits as well as exercise your aim. Can you lead the misfit prisoners of the Void Ark through the derelict spaceships and myriad dangers of the Sargasso Nebula?
- 9
Resident Evil
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action with Moros Protocol.
The game that defined the survival-horror genre is back! Check out the remastered HD version of Resident Evil.
- 10
SULFUR
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action and Indie with Moros Protocol.
SULFUR is a modern old-school action-adventure: Outsmart enemies, find treasure, improve weapons, harness powers. Delve deeper, find answers, make it end.
- 11
DOOM
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action with Moros Protocol.
Now includes all three premium DLC packs (Unto the Evil, Hell Followed, and Bloodfall), maps, modes, and weapons, as well as all feature updates including Arcade Mode, Photo Mode, and the latest Update 6.66, which brings further multiplayer improvements as well as revamps multiplayer progression.
- 12
ULTRAKILL
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action and Indie with Moros Protocol.
ULTRAKILL is a fast-paced ultra-violent retro FPS that combines the skill-based style scoring of character action games with the unadulterated carnage inspired by the best shooters of the '90s. Rip apart your foes with varied destructive weaponry and shower in their blood to regain your health.
- 13
Dead Space
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action with Moros Protocol.
The sci-fi survival-horror classic returns, completely rebuilt to offer an even more immersive experience — including visual, audio, and gameplay improvements — while staying faithful to the original game’s thrilling vision.
- 14
Robbie Swifthand and the Orb of Mysteries
Single-player alternative to Moros Protocol — playable solo, no multiplayer required. Shares Action and Indie with Moros Protocol.
From the creators of Moros Protocol, Robbie Swifthand and the Orb of Mysteries is a hardcore 2D platformer that will twist your mind and challenge your skills. Explore a temple full of devious traps, hidden treasures, and cunning surprises at every turn!