I don't know if it has been asked before but, curiousity has gotten the better of me and I felt like asking. What sort of system do the events use to determine when they should appear? Its it a timer that ticks down while idle? Is it a check system? I've notice I've only really gotten two events to spawn in the game and that was when I let the game idle for around 30 minutes of no gameplay, so I was curious if that was the benchmark