Pick your world.
Start on the Moon or Mars, then explore more destinations and stories inspired by space exploration.
Your space adventure starts here
Small astronaut.
Big decisions.
Explore new worlds, take care of your crew, and discover what it takes to live in space—one decision at a time.
Free to play in your browser · No account needed for solo play
Mission: possible.Big ideas start with one choice.
✦ Made for curious minds◌ Explore 13 destinations↺ Rewind and try again☼ Inspired by NASA science
Your mission, your choices
Think like an astronaut.
Space missions are full of decisions. In Little Astronaut, there’s room to explore, experiment, and learn from every turn.
Keep your crew safe.
Balance power, food and space radiation. Growing crops or doing science can mean giving up something else.
Try another way.
Rewind a decision, compare what happens, and use the in-game handbook to learn the science behind it.
Real science, playful thinking
Inspired by the universe we’re exploring.
Our Moon mission uses a real solar-flare record from NASA’s DONKI archive as the starting point for a fictional shelter decision. The science is real; the game’s risk points and events are simplified for learning.
Explore the NASA observation ↗FROM THE NASA DONKI ARCHIVE
X8.7solar flare
14 May 2024
14 May 2024
A historical observation—not live space weather or a measurement of an astronaut’s radiation dose.
Ready when you are
Your crew is counting on you.
Bring your curiosity. We’ll bring the outpost.
Launch Little AstronautSolo play is available without an account. Sign in to save progress or play with a crew.