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

S.T.A.L.K.E.R. 2: Heart of Chornobyl
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
Discover the vast Chornobyl Exclusion Zone full of dangerous enemies, deadly anomalies and powerful artifacts. Unveil your own epic story as you make your way to the Heart of Chornobyl. Make your choices wisely, as they will determine your fate in the end.
- 2

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.
- 3

Atomic Heart
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
In a mad and sublime utopian world, take part in explosive encounters. Adapt your fighting style to each opponent, use your environment and upgrade your equipment to fulfill your mission. If you want to reach the truth, you'll have to pay in blood.
- 4

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.
- 5

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.
- 6

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.
- 7

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.
- 8

Half-Life
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action with Atomfall.
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.
- 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

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.
- 11

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.
- 12

Outer Wilds
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
Named Game of the Year 2019 by Giant Bomb, Polygon, Eurogamer, and The Guardian, Outer Wilds is a critically-acclaimed and award-winning open world mystery about a solar system trapped in an endless time loop.
- 13

H.E.N.T.A.L.K.E.R.
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
Forget about the rules, there are none here. Just you, your weapon and the endless, ominous wastelands waiting for you to plunge into them. So, are you ready to become a predator among predators? Then welcome to H.E.N.T.A.L.K.E.R.. It will hurt, but damn it will be fun!
- 14

Subnautica
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Adventure with Atomfall.
Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive.
- 15

We Happy Few
Single-player alternative to Atomfall — playable solo, no multiplayer required. Shares Action and Adventure with Atomfall.
From the independent studio that brought you Contrast, We Happy Few is an action/adventure game set in a drug-fuelled, retrofuturistic city in an alternative 1960s England. Hide, fight and conform your way out of this delusional, Joy-obsessed world.
- 16

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.
- 17

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.
- 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!