The goal
of Sputnik is to make the trajectory of the
sputnik as long as possible using the gravity
of planets. Red planets pull the sputnik and
blue planets repel it. The trajectory is considered
finished when the sputnik was fallen onto a
planet.
Left click
and drag the planets from the top left hand
corner onto the field. You can change their
mass by clicking on them and altering it up
or down. Left click on the start button to launch
the sputniks.
