You buy the "buy in" feature in Sweet Bonanza slots and the fruits start to drop randomly along with max 100x multipliers in 10 free spins. So with putting $2 in each free spin I got a chance to multiply my $2 to $200 less than 5 minutes. The adrenaline will be high and this is what makes slots so different for both entrainment and house edge means.
it's much the same with the auto bet feature of Dice IMO, eapecially when it hits ground ZERO of losing, though in Dice there are much more.possibility that you'll lose than the slots just because we're looking for patterns.