Effect The gauge turns red based on how heated the engine is. Overheating is a mechanic in Learn 2 Fly Mobile. It is caused by the rocket being activated for too much time, without allowing down time. If it occurs, the glider and rocket explode, leaving the puppet to fall through the air to the ground. Retrieved from "https://learntofly.fandom.com/wiki/Overheating?oldid=5838" Community content is available under CC-BY-SA unless otherwise noted.