9.8 CD Key

9.8 — A 2D physics-driven space-agency simulation

Imagine a long-lost hybrid of KSP and Lunar Lander, wrapped in a casual Sunday-afternoon aesthetic but delivering serious, fully physics-driven challenge. Start with almost nothing and 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, then point upward and test your piloting skills.

Core experience

• Design and fly rockets under realistic constraints: mass, fuel, thrust-to-weight, heat, staging, and aerodynamics.
• N-body orbital mechanics shape transfers, captures, and unexpected chaos as gravity from multiple bodies influences every move.
• Atmospheric flight and re-entry require careful windows and trajectories, with real atmospheric effects behind every decision.
• Water and hydrodynamics introduce splashdowns and surface operations that behave like a true medium.
• All flight actions are hands-on: throttle control, trajectory shaping, staging decisions, and precise piloting determine success.

Progression and loop

Run your space program as a living project—plan missions, manage resources, and unlock new technologies. Build and iterate vehicles to meet mission requirements, test under real constraints, and refine designs until they endure the environments you send them into. Vehicle construction tools evolve as development continues, keeping the loop fresh and challenging.

Explore across environments

Explore the Solara system by building infrastructure that supports longer missions: stations, colonies, and surface installations that turn distant targets into achievable objectives. Environments demand different solutions—vacuum space, atmospheric flight, surface landings, and oceanic operations with hydrodynamics behaving as a real medium.

Resources, logistics, and infrastructure

Master unique resources and logistics to turn exploration into a real program. Create supply chains, deploy comms satellites, manage tradeoffs, and solve the engineering problems that come with expanding outward.

Playtesting is open. Engage with the ongoing development and contribute to 9.8’s evolution as you pilot, design, and expand your space program.