The hidden White Mushroom House in Super Mario Bros 3 can be found by collecting this many coins on these specific levels World 1-4: 44 Coins World 2-2: 30 Coins World 3-8: 44 Coins World 4-2: 24 Coins World 5-5: 28 Coins World 6-7: 78 Coins World 7-2: 46 Coins #nintendo #supermario #nes #snes #famicom #retrogaming #tricks #supermariobros #supermariobros3 #retrogames