Single-player games like Halley Mission: 2061
Below are 16 single-player Steam games similar to Halley Mission: 2061, 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 Halley Mission: 2061 page.
Ranked picks
- 1
Sole Seeker
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy and Indie with Halley Mission: 2061.
Land on unique planets to survive the horrors that await in this adventure survival RPG. Use the spoils to upgrade defensive buildings and explore the galaxy further. Can you survive the hunt all alone?
- 2
Astrosphere
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy and Adventure with Halley Mission: 2061.
In Astrosphere, a sci-fi strategy adventure game, you build a space station, explore galaxies, equip spaceships, and tackle risky missions. Gather resources, research technologies, and write your legend in the cosmos!
- 3
Lightracer Spark
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy and Indie with Halley Mission: 2061.
Lightracer Spark is a Sci-Fi Narrative game. You are an amender from a high civilization, descending to various extraterrestrial worlds. Guide living beings to prosperity, or nip a spark in the bud. Accumulate strength through choices and strategies to grasp the rise and fall of all civilizations.
- 4
ExoColony: Planet Survival
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy and Indie with Halley Mission: 2061.
Challenging space-colony sim. Guide generations of colonists, raise and educate them, manage resources, and ensure food supply. Maintain a breathable atmosphere, tackle pollution, and refine materials to build essential structures. Terraform planet and build ecosystem to make it your new home.
- 5
Galactic Crew
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy and Indie with Halley Mission: 2061.
Galactic Crew II is a roguelike space exploration game inspired by FTL and the classic XCOM games. You and your valorous crew members will explore a galaxy with all its dangers and riches. Explore and colonize planets, customize your spaceship, raid underground dungeons, mine, trade and craft!
- 6
Space Haven
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy and Indie with Halley Mission: 2061.
Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.
- 7
Starpoint Gemini Warlords
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy and RPG with Halley Mission: 2061.
Strategy from the front lines! Starpoint Gemini Warlords combines 3rd person capital spaceship combat with 4X strategy and RPG gameplay elements. Build mighty war fleets and send them into battle or lead them into combat yourself. Become the Warlord and conquer the Gemini system!
- 8
Surviving Mars
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy with Halley Mission: 2061.
There will be challenges to overcome. Execute your strategy and improve your colony’s chances of survival while unlocking the mysteries of this alien world. Are you ready? Mars is waiting for you.
- 9
Galactic Simulator
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Indie with Halley Mission: 2061.
Galactic Simulator is a clicker game based on the Fermi Paradox and the Great Filter theory. Players can simulate the evolution of celestial bodies and civilizations in the galaxy from an observer's perspective. The game supports multiplayer mode. Create a unique galaxy with friends!
- 10
Galactic Simulator2: Stargate
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy and Indie with Halley Mission: 2061.
Galactic Simulator 2: Stargate is a roguelite simulation game inspired by the Fermi Paradox and the Great Filter. Pilot your ship, gather resources, build stargates, and discover other civilizations as you explore an ever-evolving galaxy.
- 11
Inspiral: Echoes of Gravity
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy and Indie with Halley Mission: 2061.
Start as an asteroid, grow by absorbing other celestial bodies to become a planet, a star, and ultimately a black hole. Experience realistic gravity and orbital physics in an ever-evolving sandbox universe.
- 12
Neuter Master
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy and Indie with Halley Mission: 2061.
A lighthearted roguelite breeding game where you match animals on a customizable grid, earn gold with slot-machine-style combos, and balance breeding, sterilizing, and upgrades to keep your herd thriving year after year.
- 13
Idle Sailor
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy with Halley Mission: 2061.
Idle Sailor is a relaxing idle adventure where you sail between world destinations, livestream your journey, capture underwater photos of unique fish, and unlock upgrades to make each voyage faster and more rewarding.
- 14
Stellar Industrialist
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy with Halley Mission: 2061.
You are neither a general nor a soldier — you are a Stellar Industrialist. To you, peace is nothing but shutdowns and losses. Venture to the frontlines, strip battlefields for wreckage and salvage, turn spoils into resources, and expand your interstellar arms empire.
- 15
My Little Cosmos
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Indie with Halley Mission: 2061.
My Little Cosmos is a light idle clicker game that runs quietly in the background. Keyboard input and mouse clicks from everyday computer use automatically drive the evolution of a universe, with inventory rewards dropping over time.
- 16
Periapsis: Gravity Slingshot
Single-player alternative to Halley Mission: 2061 — playable solo, no multiplayer required. Shares Strategy and Indie with Halley Mission: 2061.
Lead humanity’s final journey beyond Earth. Launch ships, harness gravity slingshots, and explore distant star systems to make humanity multi-planetary.