Particle Universe 1.5

Particle Universe has been updated to version 1.5 which includes the ability to switch to a grid-based simulation. This can improve performance when simulating many particles (e.g. 10,000), but also makes the simulation less accurate (distant particles from each other no longer do direct gravitational interaction but instead apply forces based on the total mass contained within grid squares).

The simulation now starts on an approximation of our solar system, you can switch to a spiral universe by pressing C and then 5.

I have also done a new video showing a simulation of 15,000 particles: