1.2 Billion people travel through the ice apocalypse, the system is unreliable, and the rules are all up to the players to figure out.
"System, is it okay to cut down trees like this?"
The system is silent.
"System, is it okay to eat like this?"
The system is silent again.
"System, please say something!"
The system remains silent.
"Keep pretending to be dead, believe it or not, I will let you fly! I really have to control you!"