Aphesius

You just might be the only person who can answer this. What is the determining factor for what makes the orange bubbles spawn in Plague Inc?? I have been wondering this for years and have never figured it out. Huge fan of the game though, spent a lot of time in school playing Pandemic instead of working and glad it lives on.

Thanks for taking the time to look dude! Keep up the good work, Plague Inc and Rebel Inc are two of my most played mobile games.