Obviously I know the Blues and Greens from their prominence in the later Eastern Roman Empire and their involvement in Justinian's Nika Riots. But how far back would rival teams have worn these colors? Were they widespread throughout the Hellenistic world? In the game, you meet them at a hippodrome outside of Alexandria. Did they have regional franchises, or might they have traveled around and had supporters in many different cities? And would they have head political clout during this period, assuming they did exist?
Obviously video games take a lot of artistic license, but I'm curious if it's at least historically plausible.
I wrote something about the racing teams in a previous answer:
Hopefully that answer helps a bit. In short, no one really knows when the different colours developed but they probably did date back to the Republican era, at least in Rome itself. I'm not sure they would have been present in Egypt in 48 BCE though!