Mossu is a cubesat terrarium drifting through the solar system, where you explore real places and care for real plant species. Build your craft, expand your rover, and travel between Earth, the Moon, and Mars in a cozy, physics‑driven sandbox.
Grow scientifically‑grounded plants inside your orbital garden while navigating real terrain outside. Fly through orbit, descend to the surface, and drive rovers across crater fields with true mass, balance, and tumbling behavior. Every module you place affects how your craft moves, survives, and feels.
Each of Mossu’s 14 plant species is modeled with accurate morphology and physiology. They respond to climate, crowding, temperature, and shared resources — from warm orbital growth to cold Martian nights. Shape them with pruning, water their roots, and bring them from seed to pollination with the help of tiny drones and space bugs.
Start in a 10cm cubesat and expand in any direction. Build rooms, stacks, stilts, terraces, or tall wobbling towers — Mossu’s construction system is expressive and fully simulated. Everything you add changes your center of mass, heater load, lighting, and rover stability.
Play solo or cooperatively with friends as you explore real‑scale Earth orbit, the Moon, and Mars. Hunt for resources, complete missions, trade, research, and customize your craft together. Mossu’s systems are tactile, interconnected, and always grounded in real rules.
Features
14 real plant species with accurate growth and physiology
Neighbor‑aware climate, crowding, and resource sharing
Cubesat terrarium building with freeform expansion
Real rover physics with weight, balance, and tumbling
Microgravity drift and orbital motion
Hands‑on plant care: prune, water, feed, clean
Real‑scale Earth orbit, Moon, and Mars with accurate sky motion
Cooperative multiplayer across the solar system
Research, Comms, Shop, Mission, and Construction panels
Simple modding support for plants, modules, and assets
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