Playing the minimum and then maxing ever once in awhile is ok on some machines but listen to what happened to me. I was playing a stand alone progressive 7's dollar machine. I didnt read the top of the machine first (mistake). I played one dollar and three 7's came down. No noise, no bells, no nothing. An older couple walked by and was pointing and congratulating me when I had to confess and that I didnt have it maxed! Oh...what a sinking feeling that was.