Single-player games like BIG BANG TO US
Below are 8 single-player Steam games similar to BIG BANG TO US, 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 BIG BANG TO US page.
Ranked picks
- 1
Skyos
Single-player alternative to BIG BANG TO US — playable solo, no multiplayer required. Shares Simulation with BIG BANG TO US.
SKYOS is a real-time 3D space simulation where Earth, satellites, constellations, weather imagery, and orbital events evolve in sync with the living sky, while cinematic Earth-to-Moon missions unfold through real-time launch windows and orbital transfers.
- 2
Beyond The Cupola: ISS Simulator
Single-player alternative to BIG BANG TO US — playable solo, no multiplayer required. Shares Simulation with BIG BANG TO US.
You are the ISS crew, where the station's fate depends on everyone. Oxygen leaks, system failures, meteorite threats — repair with your own hands and make real-time decisions. Complete missions, perform spacewalks. Experience life in orbit: in space, nothing goes according to plan.
- 3
Planet Architect
Single-player alternative to BIG BANG TO US — playable solo, no multiplayer required. Shares Simulation with BIG BANG TO US.
A planet-building sandbox where you create entire worlds from the ground up. Generate unique planets, shape vast landscapes, and use interconnected simulations inspired by real-world processes to bring your fantasy planet to life.
- 4
Astronomy3D: Artemis II
Single-player alternative to BIG BANG TO US — playable solo, no multiplayer required. Shares Simulation with BIG BANG TO US.
Explore more than 2,900 carefully selected photos from the Artemis II mission in an interactive 3D space, featuring distant views of Earth, the Moon's far side, ancient craters, earthrise, earthset, and a solar eclipse. Photo credit: NASA / Artemis II crew
- 5
Spaceflight Simulator 2
Single-player alternative to BIG BANG TO US — playable solo, no multiplayer required. Shares Simulation with BIG BANG TO US.
Build rockets and fly them around the Solar System in this realistic aerospace sandbox. Attempt landings, build space stations, drive rovers, perform spacewalks, explore alien worlds, and get your crew home safe.
- 6
Space Crash Simulator
Single-player alternative to BIG BANG TO US — playable solo, no multiplayer required. Shares Simulation with BIG BANG TO US.
Real-time planetary collision sandbox powered by SPH physics: smash planets together and watch the destruction and its aftermath!
- 7
DISTRAIL
Single-player alternative to BIG BANG TO US — playable solo, no multiplayer required. Shares Simulation with BIG BANG TO US.
[Distrail] features a protagonist who suddenly becomes the 'director' of the final escape vessel project,and This is a visual novel game that tells the story of the 80 days the project takes place.
- 8
Kerbal Space Program
Single-player alternative to BIG BANG TO US — playable solo, no multiplayer required. Shares Simulation with BIG BANG TO US.
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.