....the minigame prizes seem pretty random to me, they do not seem to depend on which aircraft you use, how fast or slow you fly, or which boxes you collect. Each box seems completely random as to what is inside. The thunderstorms always hit after the first box is collected or passed, there is never one over the first box. If the second box is very close to the exit there will not be a thunderstorm over it either. Once the storm hits it may or may not be possible to still snag the second box...but remember that sometimes it will not be possible to snag it and it is best to not take a chance if it is a close call (unless you are really good at the game), because the goal is to complete the flight...not snag prize boxes. You will get plenty of boxes just doing the tasks.