Single-player games like Perilous Warp
Below are 14 single-player Steam games similar to Perilous Warp, 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 Perilous Warp page.
Ranked picks
- 1

Chasm: The Rift
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action with Perilous Warp.
Prepare for terror in this ground-breaking classic old-school FPS. Following the destruction of Time you are left to battle in this horrific hellhole of multilevel interconnected missions populated by gruesome grotesque creatures.
- 2

Phantom Fury
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action and Indie with Perilous Warp.
Shelly “Bombshell” Harrison is back in this highly interactive mix of first person action and road movie adventure. Embark on an adrenaline-fueled journey around the USA. Use an enormous arsenal of weapons and skills to battle treacherous soldiers and vile mutants, all while trying to save mankind.
- 3

Dread Templar
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action and Indie with Perilous Warp.
Dread Templar is a fast-paced hardcore old-school FPS, combining classic 90s shooter and modern FPS elements. Unlock and combine dozens of weapon upgrades and skills, embrace the Dread Force and obliterate hordes of fiendish enemies. Become the scariest thing in hell and get your revenge!
- 4

Prodeus
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action and Indie with Perilous Warp.
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

DOOMED
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action and Indie with Perilous Warp.
DOOMED is a First Person Shooter with horror elements, heavily inspired by old-school shooter classics.
- 6

WRATH: Aeon of Ruin
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action with Perilous Warp.
Blast, slice and shred through your enemies in this hardcore FPS inspired by the icons of the '90s, powered by the legendary Quake-1 Tech. Taking place in a realm left to rot, take up arms, unearth long-forgotten secrets and hunt down the Guardians of the Old World.
- 7

Anomalous
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action and Indie with Perilous Warp.
A SHORT and sweet pixelated low fidelity 90s throwback hyper-fast action shooter. Survive and fight through a city overrun with manufactured monstrosities, biomass horrors, and a military authority trying to purge everything living. Heavy metal / techno soundtrack featuring BOD Music
- 8

BRUTAL JOHN 2
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action and Indie with Perilous Warp.
Join BRUTAL JOHN and BRUTAL DOG in a ultraviolent old-school FPS set in a world overrun by crypto-mining technologies, where it’s up to you to destroy them and reclaim control. Prepare for an adrenaline ride that pays homage to the best shooters of the '90s.
- 9

Quake II
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action with Perilous Warp.
You are humanity’s last hope to stop the Strogg, a hostile alien race waging war against Earth. Play this military sci-fi FPS, now upgraded for modern platforms with improved visuals, new campaign content, online multiplayer/co-op, and more.
- 10

Quake
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action with Perilous Warp.
Developed by the award-winning id Software, Quake® is the ground-breaking, original dark fantasy first-person shooter that inspires today’s retro-style FPS games. With Quake (Enhanced), experience the authentic, updated, and visually enhanced version of the original.
- 11

Unreal Tournament: Game of the Year Edition
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action with Perilous Warp.
Unreal Tournament is the original King of the Hill in the frag-or-be-fragged multiplayer gaming world. As the undisputed 1999 Game of the Year, Unreal Tournament grabbed the first person shooter genre by the soiled seat of its pants and knocked it around the room with its never-before-seen graphics, brutal edge-of-your-seat gameplay and...
- 12

DOOM 3
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action with Perilous Warp.
A demonic invasion has overwhelmed the Union Aerospace Corporation's Mars research facility. As one of only a few survivors, you must fight your way to hell and back against a horde of demons in this award-winning horror/action FPS and reimagining of the original DOOM.
- 13

Half-Life
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action with Perilous Warp.
Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.
- 14

Painkiller
Single-player alternative to Perilous Warp — playable solo, no multiplayer required. Shares Action with Perilous Warp.
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?