The BEST game to play during those 5 minutes, that'll GIVE you the MOST WILDS than any other game, is hands down... THE RAIN FOREST KING!!!
*Try to start off with at least 500,000,000 coins
*If you bet anywhere between 10,000,000-25,000,000 for each spin...
*You should collect a minimum of 1B coins and depending on your luck, you'll probably total 2B-3B and possibly more.
Try it out for yourself and see what happens, I hope it works best for you as it does for me!