In this game you try to launch a rocket from Earth to Mars at just the right time for a successful rendezvous. Space key launches the rocket Tracing: Left-Right arrows puts pen up-down for the Earth and traces its path. Up-Down arrows puts pen up-down for Mars and traces its path. a-z keys puts pen up-down for rocket and traces its path. e key clears the traces.
Inspired by the Mars Series of National Geographic: https://en.wikipedia.org/wiki/Mars_(2016_TV_series) The orbits of Earth and Mars are such that only at certain times during the course of a few years it is feasible to launch a rocket to Mars from Earth and vice versa. I hope this game allows one to develop a sense of these challenges and how to overcome them.