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Ostranauts

Mostly Positive · 3.0k reviews · Indie · 2026

Ostranauts

6 of the 12 games like Ostranauts are rated Very Positive or higher on Steam. Prices range from $0.59 to $34.99. Released 2021–2026. They notably share the Flight, Simulation tags.

Reentry - A Space Flight Simulator

Overwhelmingly Positive · 1.3k reviews · Adventure · 2025

Like Ostranauts: Flight · Simulation · Space Sim

Overwhelmingly Positive · 1.3k
Do you have what it takes to become an astronaut? Reentry is a realistic space flight simulator inspired by the early NASA space programs, from orbiting Earth in Mercury and Gemini, to the moon landing in project Apollo. Learn the procedures. Operate the spacecraft. Complete the mission.
AIPilot NASA space missions
Adventure2025.11.07
$34.99

Stellar Wanderer DX

Mostly Positive · 60 reviews · Action · 2026

Like Ostranauts: Flight · Space Sim · Exploration

Mostly Positive · 60
Fight, trade, mine, and explore the galaxy in this old-school space combat simulator. You are a freelance pilot who survived an assassination attempt. Travel the open world, chase bounties, get new ships, upgrade your gear, and, why not, maybe even save humankind!
AIFly the galaxy, chase bounties, save humanity
Action2026.03.12
$19.99

Spaceflight Simulator

Overwhelmingly Positive · 9.3k reviews · Indie · 2022

Like Ostranauts: Sandbox · Space · Simulation

Overwhelmingly Positive · 9.3k
In Spaceflight Simulator, you will get to build your rockets, plan launches and flights, attempt landings, deploy payloads and explore new worlds.
AIBuild rockets and explore space
Indie2022.02.17
$14.99

Starminer

Mostly Positive · 1.8k reviews · Action · 2026

Like Ostranauts: Sandbox · RPG · Trading

Mostly Positive · 1.8k
Design and build a massive interstellar fleet in this simulation sandbox. Strip space of its minerals for profit, but stay alert: your greed attracts the alien. Master deep base-building and deploy warships to protect your empire in immersive real-time space.
AIBuild an interstellar fleet
Action2026.05.27
$29.99

Approximately Up

Very Positive · 846 reviews · Adventure · 2026

Like Ostranauts: Space Sim · Simulation · Flight

Very Positive · 846
Build, crash, rebuild! Explore new planets in co-op multiplayer with your fully modular spaceship made from whatever bolts together long enough to fly. Mount giant thrusters, annoying cables, and everything in between. Complete wild missions, face the dangers of space and argue with your crew!
AIBuild, crash, rebuild your way through space
Adventure2026.08.06
$24.99

Lakehopper

Very Positive · 474 reviews · Adventure · 2026

Like Ostranauts: Life Sim · Immersive Sim · Exploration

Very Positive · 474
Take flight in a seaplane flight simulator through a rugged world where you are responsible for the care and maintenance of your plane. Deliver cargo between far-flung communities in a flooded landscape that challenges your piloting skills! Fix your plane and keep flying!
AIFly and fix your seaplane
Adventure2026.03.30
$9.99

Inspiral: Echoes of Gravity

Mostly Positive · 56 reviews · Casual · 2025

Like Ostranauts: Space · Procedural Generation · Sandbox

Mostly Positive · 56
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.
AIGrow from asteroid to black hole
Casual2025.11.08
$3.99

Between the Stars

Mostly Positive · 2.0k reviews · Action · 2024

Like Ostranauts: RPG · Survival · Space

Mostly Positive · 2.0k
Become the Captain of an interstellar cruiser and journey across the galaxy to save the Republic. During your journey you will have to make important decisions, improve the weaponry of your ship and fight against numerous enemies.
AICaptain a starship crew
Action2024.03.07
$29.99

Deep Despair 2

Mostly Positive · 87 reviews · Adventure · 2021

Like Ostranauts: Survival · Open World · Building

Mostly Positive · 87
Deep Despair 2 is an open world survival adventure action game with procedural generation and complete freedom of action: building, crafting, hunting, farming, livestock, brewing, cooking, traveling, fight, and more.
AIBuild and survive an open-world frontier
Adventure2021.10.08
$2.99 $0.59

Soulash 2

Very Positive · 2.4k reviews · Adventure · 2023

Like Ostranauts: Procedural Generation · Open World · Sandbox

Very Positive · 2.4k
Soulash 2 is a sandbox RPG roguelike with a procedurally generated open world, simulated history, skill-based progression system, customizable abilities, material-based crafting, building, trading, and the possibility of total mayhem. Will you save your world or destroy it?
AISave or destroy your world
Adventure2023.12.04
$18.99

Space Engineers 2

Mostly Positive · 5.0k reviews · Action · 2025

Like Ostranauts: Sci-fi · Survival · Building

Mostly Positive · 5.0k
Space Engineers 2 is a playable Early Access Alpha sandbox focused on engineering, exploration, and colonization in a fully destructible universe. Design and build ships, stations, and planetary bases while uncovering the story of Miro and Ivan Sokol. Help shape the future of the Almagest system.
AIEngineer your space empire
Action2025.01.27
$29.99

Flight Of Nova

Very Positive · 534 reviews · Simulation · 2022

Like Ostranauts: Flight · Simulation · Immersive Sim

Very Positive · 534
Flight of Nova is a simulator based on newtonian mechanics in which you control spacecraft in the Noren star system. You fly multiple types of spacecraft doing transport and search missions in an environment with realistic aerodynamics and orbital physics.
AINavigate space using realistic orbital physics
Simulation2022.05.31
$29.99