I thought that was the point of the game, but it always ends for some reason. ALso need to see the sun start to wobble into an orbit after you drop a white dwarf in close.
IMO, many of those planets are impacting and should break up instead of reaching light speed.
Wut?
Do you just mean being gravitational slingshot ejected and leaving the arbitrary 2AU limit of the simulation? 2AU just a bit bigger than Mars' orbit, out to the inner boundary (as much as it has one) of the Asteroid Belt in our Solar System.
Also, I think the actual planets in terms of the underlying math are to scale in the simulation, and are just big and fat for visibility for our benefit. To scale, they'd be less than one pixel dots for the Earth mass ones, and the gas giant mass ones would be just 3-4 pixels wide, and the central star maybe the size of the earth mass size dot... well, even that would be too big unless it was a red or blue giant.
So the planets actually colliding would be very rare. Near-misses and gravitational slingshot ejections are more common statistically.
http://joshworth.com/dev/pixelspace/pixelspace_solarsystem.html
