A 2D space agency simulator where every object follows the same orbital physics. Land on moons, build colonies, deploy satellites, and reshape entire planetary systems. Deorbit a moon if you want.

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Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

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This game is not yet available on Steam

Planned Release Date: Q1 2027

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About This Game

Imagine the long lost child of KSP and Lunar Lander. With the same amount of chaos, high intensity-high reward, but in a seemingly casual Sunday afternoon relaxed aesthetics. Start with almost nothing. Build the capability to see farther, reach farther, and unlock the next layer of space. Establish observatories, deploy telescopes, and grow your infrastructure to reveal new targets and opportunities and then aim upwards and put your flying skills to the test.

9.8 is a 2D space-agency simulator where a fully physics-driven universe (N-body orbits, atmospheres, heat management, hydrodynamics) makes every small step earned. Build your program from first hops to interplanetary operations through a uniquely designed local star-system cluster.

In 9.8 you will:

  • Design and fly rockets under simulation-grade constraints: mass, fuel, TWR, heat, staging, aerodynamics.

  • N-body orbital mechanics: gravity from multiple bodies shapes transfers, captures, and chaos. Everything is physics means that yes, theoretically it is possible to deorbit the moon.

  • Atmospheric flight + re-entry: launch windows and trajectories matter.

  • Water/hydrodynamics: splashdowns and surface operations behave like a real medium.

  • Run your space program: plan missions, manage resources, and unlock new technologies.

  • Explore the Solara system by building infrastructure and discovering all of the secrets that the cosmos hides.

FLY ROCKETS, NOT SCRIPTS

Every maneuver is flown. Throttle control, trajectory shaping, staging decisions, and precise piloting determine whether you reach orbit or become debris.

BUILD AND DESIGN YOUR VEHICLES

Construct vehicles to match the mission. Iterate on design, test under real constraints, and refine until your craft can survive the environment you’re sending it into.

Vehicle construction tools are actively evolving as development continues.

EXPLORE ACROSS SPACE, ATMOSPHERE, SURFACE, AND OCEANS

Different environments demand different solutions: vacuum operations, atmospheric flight, surface landings, and ocean interaction with hydrodynamics that behaves like a real medium.

EVERYTHING IS PHYSICS (NO RAILS)

N-body gravity, atmospheres, heat, buoyancy, and momentum all interact. The universe doesn’t “help” you and if you push the system hard enough, extreme outcomes are possible.

BUILD INFRASTRUCTURE THAT EXPANDS YOUR REACH

Establish stations, colonies, and surface installations to support longer missions, extend operations, and turn distant targets into achievable objectives.

MASTER UNIQUE RESOURCES AND LOGISTICS

Resources and logistics constraints turn exploration into a real program. Build supply chains, comms satellites, manage tradeoffs, and solve the engineering problems that come with expanding outward.

System Requirements

Windows
macOS
    Minimum:
    • OS: Windows 10 (64-bit)
    • Processor: Intel Core i3 (4th gen) / AMD Ryzen 3 (or equivalent)
    • Memory: 8 GB RAM
    • Graphics: Vulkan 1.1 capable graphics card with current drivers: NVIDIA GTX 700 series, AMD GCN (Radeon HD 7000) or Intel HD 510 (Skylake) or newer. Intel HD 4600 and older cannot run the game.
    • Storage: 2 GB available space
    • Additional Notes: Requires Vulkan graphics drivers. Intel HD 4000 to 6000 series graphics (4th and 5th gen Core) are not supported.
    Recommended:
    • OS: Windows 11 (64-bit)
    • Processor: Intel Core i5 (8th gen) / AMD Ryzen 5 (or equivalent)
    • Memory: 16 GB RAM
    • Graphics: GTX 1050 Ti / RX 570 (or better)
    • Storage: 4 GB available space
    • Additional Notes: Requires Vulkan graphics drivers. Intel HD 4000 to 6000 series graphics (4th and 5th gen Core) are not supported.
    Minimum:
    • OS: macOS 12 Monterey
    • Processor: Apple M1 or Intel Core i5 (universal build, both native)
    • Memory: 8 GB RAM
    • Graphics: Metal-capable GPU (Apple integrated GPU or Intel Iris Plus)
    • Storage: 4 GB available space
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