Dyson Dilemma Simulation

As a side project I created a GPU particle simulation in an attempt to recreate the formation and evolution of a spiral galaxy.Then, pondering the idea of civilizations colonizing their galaxies slowly, not merely at less than the speed of light but at a tiny fraction of it (a process that has since been nicknamed "crawlonizing"), I added the ability to mark a star as a "civilization" and then, as it passed near other stars, the ability for it to "colonize" them, over time converting the entire ...