The Blue and Orange people of the galaxy need to travel, and they have very specific requirements.

Blue people can only travel in Blue tubes, Orange people can only travel in Orange tubes.

Green tubes are for everyone, though, and both Blue and Orange people like them.

Drag coloured tubes to the planets to place an exit. Entrances are places automatically.

If a planet has more than one exit of a colour, then people alternate between them.

Click a planet to rotate the exits on that planet.

The numbers are People on the Planet/People who need to be on the planet. So 100/0 is bad, 100/100 is good.

As an engineer in the employ of Connected Worlds Public Transport Inc, it is your job to make it happen.

Make it happen.