Single-player games like Nuclear Nightmare
Below are 14 single-player Steam games similar to Nuclear Nightmare, 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 Nuclear Nightmare page.
Ranked picks
- 1
Lethal Company
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Nuclear Nightmare.
A co-op horror about scavenging at abandoned moons to sell scrap to the Company.
- 2
Holey
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Nuclear Nightmare.
A co-op horror game where you are part of a crew sheltering in a collapsed tunnel, scavenging loot across maps filled with deadly creatures born from a biological war. Feed the creature, convert its waste into fuel, and reach the radio tower
- 3
UNFROST
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Nuclear Nightmare.
UNFROST is a co-op Antarctic horror FPS about hunting ancient entities known as the Riftborne. Gather evidence, survive extreme conditions, prepare a nuclear strike, and extract before impact.
- 4
Murky Divers
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Nuclear Nightmare.
Solo or up to 8 players. Get rid of your employer's failed experiments in abandoned underwater labs. Navigate your submarine, avoid abyssal terrors, and remove all corpses.
- 5
Diamond Hunt
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action and Adventure with Nuclear Nightmare.
A co-op horror game about searching for items to build a spaceship to escape a dying galaxy.
- 6
Bunker Invaders
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Nuclear Nightmare.
A co-op horror game where you must scavenge for loot and maintain the bunker to keep it standing
- 7
Sketchy's Contract
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Nuclear Nightmare.
A 1-8 player co-op sci-fi looter horror game that takes place on a mysterious asteroid belt where players must complete contracts by traveling to exotic planets to kill creatures, find loot, and/or farm planetary materials that they must return to an ominous figure named Sketchy.
- 8
Species: Unknown
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Nuclear Nightmare.
Species: Unknown is a 1 to 4 players co-op survival horror. Complete high-risk missions aboard an abandoned ship while being hunted by an unknown creature. Survive and upgrade your gear to face each new threat that lurks in the dark.
- 9
The Forest
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Nuclear Nightmare.
As the lone survivor of a passenger jet crash, you find yourself in a mysterious forest battling to stay alive against a society of cannibalistic mutants. Build, explore, survive in this terrifying first person survival horror simulator.
- 10
The Thing from Nowhere
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Indie and Adventure with Nuclear Nightmare.
Travel to a remote town in Alaska and uncover the truth behind reported sightings of a mythical creature from ancient Inuit folklore. A Choose Your Own Adventure mystery set in the 1950s, inspired by classic monster movies and Amiga's "It Came from the Desert".
- 11
The Thing: Remastered
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action with Nuclear Nightmare.
The Thing: Remastered is a faithful restoration of the cult-classic 2002 third-person survival horror shooter game inspired by Universal Pictures’ genre-defining 1982 film, The Thing
- 12
R.E.P.O.
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action and Early Access with Nuclear Nightmare.
An online co-op horror game with up to 6 players. Locate valuable, fully physics-based objects and handle them with care as you retrieve and extract to satisfy your creator's desires.
- 13
Nebraska
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Indie and Adventure with Nuclear Nightmare.
Nebraska takes place as a journalist writing a book about mid-west America, who runs out of gas in a rural area of Nebraska. Players will explore and uncover the secret facility that lies beneath the attraction and discover the terrible experiments that have taken place there.
- 14
Pyramis
Single-player alternative to Nuclear Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Nuclear Nightmare.
Pyramis is a H.R Giger & retro-scifi-inspired survival horror game, that will bring back the genre to its roots and modernize it in the process. The game is driven by its story, beautiful environments, exploration, and horrific themes.