Some players have been playing in the coin rooms for a very long time . Some players also go in the big coin rooms just for fun and keep winning the more they win the more they can afford to lose . It’s not how I play but I have encountered many players , with multi billions in their pockets . Just play the coin rooms at a level you can afford to and get comfortable there , and try not to think about what anyone else is doing . They will normally be in a different coin league to mere mortals .