The space agency campus in Go No-Go, seen from above

A space mission design game

You run an agency: pick the mission, build a CubeSat, take it through testing and launch. Made for NASA Space Apps Challenge 2026 in Milan.

The game in half a minute.

A real playthrough, from the campus to mission control: the CubeSat takes shape, passes its vibration test and lifts off.

  • In the browser

    It runs on a computer and on a phone, with nothing to install.

  • Saves

    Your game stays saved in the browser you play in.

  • Players

    You play solo. Multiplayer missions arrive with the consortia.

  • Language

    The game text is in English for now.

The game in 5 steps. From idea to orbit.

Pick the mission

You negotiate the objectives with the stakeholders and set the requirements: science, budget and deadlines have to fit together.

Choosing the mission objectives

Build the CubeSat

You fit instruments and subsystems one part at a time. Mass, power, data and cost change with every choice.

The CubeSat with its components fitted

Pass the 3 tests

Vibration, balance and thermal vacuum are minigames. Faults have to show up on the ground.

A satellite qualification test

Launch the mission

You pick the launcher by ΔV and payload capacity, then the countdown starts.

The rocket with the CubeSat on board

Fly the CubeSat in orbit

From Mission Control you follow the whole mission and decide what to do when the satellite drops into safe mode.

Mission Control during the mission

Go or
No-Go

Every launch comes down to this question. You answer it with your design's numbers: mass, power, ΔV and risk.

See the method

A game built on the NASA method.

  • Phases A to F

    The project moves through phases and passes the MCR, PDR, CDR and FRR reviews.

  • Components from NASA TechPort

    Instruments and subsystems point to their TechPort record.

  • Orbits with NASA GMAT

    GMAT R2025a works out ΔV, eclipses and ground-station contacts for Earth, the Moon, Mars and Venus.

  • CubeSat 101

    The path follows NASA's guide for first-time CubeSat developers.

The flight readiness review, with its Go and No-Go buttons

Consortia, coming soon.

Up to four players on the same mission, each with a role: Planning, Satellite, Science or Communications. Everyone votes before launch.

The consortium panel in Go No-Go