Single-player games like Protos Magos
Below are 8 single-player Steam games similar to Protos Magos, 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 Protos Magos page.
Ranked picks
- 1
DOOM II
Single-player alternative to Protos Magos — playable solo, no multiplayer required. Shares Action with Protos Magos.
Hell has invaded Earth, and to save it, you must battle mightier demons with even more powerful weapons. This beloved sequel to the groundbreaking DOOM (1993) introduced players to the brutal Super Shotgun, the infamous Icon of Sin boss, and more intense FPS action.
- 2
Warhammer 40,000: Boltgun
Single-player alternative to Protos Magos — playable solo, no multiplayer required. Shares Action with Protos Magos.
Load up your Boltgun and unleash the awesome Space Marine arsenal to blast your way through an explosion of sprites, pixels and blood in a perfect blend of Warhammer 40,000, frenetic gameplay and the stylish visuals of 90’s retro shooters.
- 3
CARNAGE OFFERING
Single-player alternative to Protos Magos — playable solo, no multiplayer required. Shares Action and Adventure with Protos Magos.
Ultra fast-paced sci-fi FPS where you battle waves of robots and genetically engineered creatures. Upgrade your arsenal, unleash explosive physics, and survive relentless combat.
- 4
Shadow Warrior
Single-player alternative to Protos Magos — playable solo, no multiplayer required. Shares Action and Adventure with Protos Magos.
Shadow Warrior is a bold reimagining of the classic 3D Realms’ shooter from independent developer Flying Wild Hog (Hard Reset) starring the legendary and quick-witted warrior Lo Wang.
- 5
COVEN
Single-player alternative to Protos Magos — playable solo, no multiplayer required. Shares Action and Adventure with Protos Magos.
COVEN is a hyper-violent retro FPS where your path of vengeance will take you across time and space. Destroy your enemies and eat their flesh.
- 6
Project Warlock II
Single-player alternative to Protos Magos — playable solo, no multiplayer required. Shares Action with Protos Magos.
Adrenaline-pumping gore retro funhouse that’s full of guns, magic, demons, vertical arenas, 3D visuals, 2D sprites, and heavy metal music. Inspired by FPS classics like Quake and Doom 64, Project Warlock II is the explosive boomer shooter sequel you were too shy to ask for.
- 7
Painkiller
Single-player alternative to Protos Magos — playable solo, no multiplayer required. Shares Action with Protos Magos.
The classic Painkiller series is back! Battle through Purgatory in fast-paced co-op action, wielding infernal weapons against relentless demonic hordes. Condemned for your sins, the Voice of the Creator offers you a chance at redemption. Will you seize it or be lost to darkness?
- 8
Arthurian Legends
Single-player alternative to Protos Magos — playable solo, no multiplayer required. Shares Action with Protos Magos.
Arthurian Legends is a medieval first person action game set in the land of Albion during a time of myth and legend. Battle hordes of Saxons, demonic beasts, the undead and worse in thy quest to save Albion from The Masters of the Old Religion.