$100x4machines. Leave machine at the right moment, can win small. If keep playing, see what happened

$100x4machines.
1st machine leave after 2 bonus. Win
2nd machine, if leave after 1st spin bonus can win.
3rd machine, win more then double the money, can leave and keep winning
4th no bonus. But if added 1-3 machine winning, can be a small win too