Single-player games like Human Extinction Simulator
Below are 12 single-player Steam games similar to Human Extinction Simulator, 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 Human Extinction Simulator page.
Ranked picks
- 1

Sid Meier's Civilization®: Beyond Earth™
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Strategy with Human Extinction Simulator.
Sid Meier’s Civilization: Beyond Earth is a new science-fiction-themed entry into the award winning Civilization series. As part of an expedition sent to find a home beyond Earth, lead your people into a new frontier, explore and colonize an alien planet and create a new civilization in space.
- 2

Alliance of the Sacred Suns
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Strategy and Simulation with Human Extinction Simulator.
Alliance of the Sacred Suns is a sci-fi grand-strategy RPG that begins with your coronation as the head of an interstellar Empire, and ends with your demise. Manage feuding noble houses and the schemes of would-be usurpers as you try to revive the glory of an Empire on the brink of collapse.
- 3

Age of Wonders: Planetfall
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Strategy with Human Extinction Simulator.
Age of Wonders: Planetfall is the new strategy game from Triumph Studios, creators of the critically acclaimed Age of Wonders series, bringing all the exciting tactical turn-based combat and in-depth empire building of its predecessors to space in an all-new, sci-fi setting.
- 4

Shadow Empire
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Strategy and Simulation with Human Extinction Simulator.
Shadow Empire is a deep turn-based 4X wargame with a unique blend of military focus, procedurally generated content and role-playing features. Players take the seat of the supreme ruler of a small nation, with the goal of reconquering a devastated planet.
- 5

Pandora: First Contact
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Strategy and Simulation with Human Extinction Simulator.
Pandora: First Contact is a science fiction 4X turn-based strategy game on a planetary scale. Our Earth has been exhausted and colonial attempts on other planetary bodies have been in vain. Finally, after decades of exploration, an interstellar probe has brought promise of a new world.
- 6

Codex of Victory
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Strategy and Indie with Human Extinction Simulator.
In this sci-fi turn-based strategy with real-time base-building elements, you’ll be defending human territories against the transhuman Augments. Expand your HQ, and manufacture and upgrade an army of advanced drones to wage interplanetary war for Humanity!
- 7

Rising Lords
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Strategy and Indie with Human Extinction Simulator.
Rising Lords is a medieval turn-based strategy game with card and board game elements. Send your serfs to fight and die in your name... or let them prosper, and use them to your advantage!
- 8

The Last Federation
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Strategy and Indie with Human Extinction Simulator.
From the creators of AI War: Fleet Command comes an all-new grand strategy title with turn-based tactical combat, set in a deep simulation of an entire solar system and its billions of inhabitants. You are the last of a murdered race, determined to unify or destroy the 8 others.
- 9

Sid Meier’s Ace Patrol
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Strategy with Human Extinction Simulator.
Battle to Rule the Skies!The skies over Europe are a dangerous place, where ace pilots lead their squadrons to glorious victory or crushing defeat! Take control of dozens of the most famous fighter planes of WWI and head into the dogfight. Roll, slip, and loop to get the drop on enemy aces.
- 10

Battle
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Indie with Human Extinction Simulator.
"B.A.T.T.L.E. is a high-action single-player FPS with realistic gunplay, intense combat, and stunning graphics. Master 64 unique weapons, customize them with 240 skins, and fight against enemies in immersive war zones."
- 11

March of the Living
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Strategy and Indie with Human Extinction Simulator.
Roguelike-like inspired by FTL and popular zombie fiction. Guide a group of survivors to a rumoured safe haven.
- 12

Bret Airborne
Single-player alternative to Human Extinction Simulator — playable solo, no multiplayer required. Shares Indie with Human Extinction Simulator.
Bret Airborne shakes up the standard match-3 formula with strategic gameplay and original game mechanics.