Single-player games like Quarantineer
Below are 14 single-player Steam games similar to Quarantineer, 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 Quarantineer page.
Ranked picks
- 1
Undead Defense TD
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Strategy with Quarantineer.
Zombies are coming! Build your defenses and expand your settlement to create a safe space for humanity. Use turrets, walls and light towers to keep the darkness safe. Expand your settlement to find abandoned settlements and additional resources.
- 2
Rebirth evolution
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Strategy and Indie with Quarantineer.
2D pixel style simulation business strategy game Build and operate your own survivor base, recruit and cultivate various professional combatants. Clear zombie strongholds, reduce regional infections, survive in the apocalypse, and establish your own power.
- 3
Infection Free Zone
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Strategy and Indie with Quarantineer.
Choose any real region from the world. Choose your base of operations, then rebuild and readapt the buildings around you to create a self-sustaining settlement. Take charge of a group of survivors from your city. And when the night falls - Defend the zone from the infected!
- 4
Kingdom Wars 4
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Strategy and Indie with Quarantineer.
It's 1347, the time of the Hundred Years' War. In this historical grand strategy and RTS hybrid you play as one of 200 minor lords across medieval Europe, Africa or Middle East. Rise up to take over your Kingdom and be crowned, then fight to preserve your empire as Black Death descends on Europe.
- 5
After Long Night
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Strategy and Indie with Quarantineer.
After Long Night is a sandbox survival RTS. Build and fortify your base, scavenge every corner for vital resources, craft deadly weapons, and raise a militia to fight off relentless zombie hordes that strike every night. In this world, scavenging isn't just survival—it's strategy, power and war.
- 6
Stronghold: Definitive Edition
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Strategy and Simulation with Quarantineer.
Greetings sire! Your stronghold awaits you. Build a castle economy, besiege unforgettable villains and return to the 'castle sim' that started it all. Experience this classic RTS with upgraded visuals, modernised gameplay, Steam multiplayer and a new campaign.
- 7
After Inc: Revival
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Strategy and Simulation with Quarantineer.
Can you rebuild civilisation after a zombie apocalypse? From the creator of Plague Inc. comes a unique blend of strategic simulation, survival city builder and ‘mini 4X’. Build settlements, harvest resources and shape society as you lead Humanity out of the darkness.
- 8
They Are Billions
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Strategy with Quarantineer.
They Are Billions is a Steampunk strategy game set on a post-apocalyptic planet. Build and defend colonies to survive against the billions of the infected that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse?
- 9
The Stanley Parable
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Indie and Adventure with Quarantineer.
The Stanley Parable is a first person exploration game. You will play as Stanley, and you will not play as Stanley. You will follow a story, you will not follow a story. You will have a choice, you will have no choice. The game will end, the game will never end.
- 10
Papers, Please
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Indie and Adventure with Quarantineer.
Congratulations. The October labor lottery is complete. Your name was pulled. For immediate placement, report to the Ministry of Admission at Grestin Border Checkpoint. An apartment will be provided for you and your family in East Grestin. Expect a Class-8 dwelling.
- 11
Plague Inc: Evolved
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Strategy and Indie with Quarantineer.
Plague Inc: Evolved is a unique mix of high strategy and terrifyingly realistic simulation. Your pathogen has just infected 'Patient Zero' - now you must bring about the end of human history by evolving a deadly, global Plague whilst adapting against everything humanity can do to defend itself.
- 12
This War of Mine
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Indie and Adventure with Quarantineer.
In This War Of Mine you do not play as an elite soldier, rather a group of civilians trying to survive in a besieged city; struggling with lack of food, medicine and constant danger from snipers and hostile scavengers. The game provides an experience of war seen from an entirely new angle.
- 13
Pandemic: The Board Game
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Strategy and Simulation with Quarantineer.
Humanity is on the brink of extinction. As members of an elite disease control team, you’re the only thing standing in the way of the four deadly diseases spreading across the world.
- 14
The Sims™ 4
Single-player alternative to Quarantineer — playable solo, no multiplayer required. Shares Adventure and Simulation with Quarantineer.
Play with life and discover the possibilities. Unleash your imagination and create a world of Sims that’s wholly unique. Explore and customize every detail from Sims to homes–and much more.