1.4

- Free

1.3.2

- Maintenance

1.3

- Planet data

- Immersive view

- Improved movement

1.2.2

- Minor update

1.2.1

- Volume control

1.2

- New planet textures

- Improved text, graphics&sound

- Improved planet selection

1.1.3

- Changed text and images

1.1.2

- Planets selected from within animation

1.1.1

- Quiz difficulty levels

- Planets selected from "fact-info"

- Sound and animation improvements

1.1.0

- Facts panel displays the planets and definitions of planetary properties.

- Layout improved