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