Rubble!
Save the Earth from asteroids.
Fly to Mars
Launch a spacecraft from Earth to Mars and back again.
Space Stage
Film yourself on the Moon, Mars, and more!
Sizemology
Resize objects until they're the correct relative size.
Solar Vision
Look at the Sun in different ways.
Rover Coder
Drive a Mars rover.
Matter Sorter
Is it a solid, liquid, gas, or plasma?
Star Maze
Be a photon, escape the sun.
Planet Families 2
Build a solar system in 3d.
Planet Families
Build a solar system (original 2D version).