Single-player games like Atomfall
Below are 23 single-player Steam games similar to Atomfall, 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 Atomfall page.
Ranked picks
- 1

Dead Island 2
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
A deadly virus is spreading across Los Angeles, turning its inhabitants into zombies. Bitten, infected, but more than just immune, uncover the truth behind the outbreak and discover who - or what - you are. Survive, evolve and become the ultimate Zombie Slayer.
- 2

Sniper Elite: Resistance
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
Offering unparalleled sniping mechanics, stealth and tactical third-person combat, Sniper Elite: Resistance turns the attention of the award-winning series towards a hidden war, far from the front lines, deep within the heart of occupied France.
- 3

DOOM Eternal
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action with Atomfall.
Hell’s armies have invaded Earth. Become the Slayer in an epic single-player campaign to conquer demons across dimensions and stop the final destruction of humanity. The only thing they fear... is you.
- 4

The Outer Worlds 2
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
The Outer Worlds 2 is the sequel to the award-winning first-person sci-fi RPG from Obsidian Entertainment.
- 5

Sniper Elite 5
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
The award-winning series returns as Karl Fairburne fights to uncover Project Kraken in 1944 France. The genre-defining authentic sniping, with enhanced kill cam, has never looked or felt better as you fight across immersive maps to stop the Nazi war machine in its tracks.
- 6

Left 4 Dead 2
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action with Atomfall.
Set in the zombie apocalypse, Left 4 Dead 2 is a co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.
- 7

Cyberpunk 2077
Single-player alternative to Atomfall — playable solo, no multiplayer required.
Cyberpunk 2077 is an open-world, action-adventure RPG set in the dark future of Night City — a dangerous megalopolis obsessed with power, glamor, and ceaseless body modification.
- 8

Hell is Us
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
If war is the closest we get to hell on earth, it's because Earth harbours the worst of demons: humankind. In an isolated country ravaged by infighting, discover the secrets of your past and deal with the repercussions of a mysterious calamity.
- 9

System Shock
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
A first-person fight to the death in the depths of space!
- 10

Fallout 4
Single-player alternative to Atomfall — playable solo, no multiplayer required.
From Bethesda Game Studios, the award-winning creators of Starfield and The Elder Scrolls V: Skyrim, comes Fallout 4. A landmark in open-world RPG design and winner of over 200 ‘Best Of’ honors, including the DICE and BAFTA Game of the Year.
- 11

Prey
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
In Prey, you awaken aboard Talos I, a space station orbiting the moon in the year 2032. You are the key subject of an experiment meant to alter humanity forever – but things have gone terribly wrong. The space station has been overrun by hostile aliens and you are now being hunted.
- 12

The Outer Worlds
Single-player alternative to Atomfall — playable solo, no multiplayer required.
The Outer Worlds is an award-winning single-player RPG from Obsidian Entertainment and Private Division. As you explore a space colony, the character you decide to become will determine how this player-driven story unfolds. In the colony's corporate equation, you are the unplanned variable.
- 13

Metro Exodus
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action with Atomfall.
Flee the shattered ruins of the Moscow Metro and embark on an epic, continent-spanning journey across the post-apocalyptic Russian wilderness. Explore vast, non-linear levels, lose yourself in an immersive, sandbox survival experience, and follow a thrilling story-line that spans an entire year in the greatest Metro adventure yet.
- 14

BioShock™
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action with Atomfall.
BioShock is a shooter unlike any you've ever played, loaded with weapons and tactics never seen. You'll have a complete arsenal at your disposal from simple revolvers to grenade launchers and chemical throwers, but you'll also be forced to genetically modify your DNA to create an even more deadly weapon: you.
- 15

Stalker
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Adventure with Atomfall.
The background story of "Stalker" is that a teenager encounters various events on the road following a young girl. The teenager(player) can selectively interact and give repairs / help due to these events. How you will lead to different ending. The game was developed during the Global Game Jam 2020.
- 16

DEATHLOOP
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action with Atomfall.
DEATHLOOP is a next-gen FPS from Arkane Lyon, the award-winning studio behind Dishonored. In DEATHLOOP, two rival assassins are trapped in a mysterious timeloop on the island of Blackreef, doomed to repeat the same day for eternity.
- 17

Sniper Elite 4
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
Discover unrivalled sniping freedom in the largest and most advanced World War 2 shooter ever built. Experience tactical third-person combat, gameplay choice and epic longshots across gigantic levels as you liberate wartime Italy from the grip of Fascism.
- 18

Sniper Elite 3
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
Sniper Elite 3 is a tactical third-person shooter that combines stealth, gameplay choice and genre-defining ballistics with huge, open levels and the exotic terrain of World War 2 North Africa.
- 19

Aliens vs. Predator™
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action with Atomfall.
Survive, hunt and prey in the deadly jungles and swamps in distinctly new and thrilling first person gameplay.
- 20

Zombie Army Trilogy
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action with Atomfall.
The cult horror shooter series comes to an apocalyptic conclusion with an epic new third chapter, a heart-pumping new horde mode, and remastered editions of the best-selling Nazi Zombie Army 1 & 2.
- 21

Evil Genius 2: World Domination
Single-player alternative to Atomfall — playable solo, no multiplayer required.
A satirical spy-fi lair builder where YOU are the criminal mastermind! Construct your base, train your minions, defend your operations from the Forces of Justice, and achieve global domination!
- 22

Zombie Army 4: Dead War
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action with Atomfall.
Hitler’s hordes are back for more in this spine-chilling shooter from the makers of Sniper Elite 4! Abominable occult enemies, epic weapons and a harrowing new campaign for 1-4 players await in 1940s Europe, as you fight to save humankind from undead Armageddon!
- 23

Strange Brigade
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
Embark on an exotic journey into danger in this rip-roaring 1930s third person adventure for 1-4 players! Encounter pulse-pounding action, treacherous traps and tales of derring-do!