To better figure out the reason why the gamblers should use a slot
machine emulator before playing real gambling slots, we
will give a quick guide to the beneficial features of using it. First of all,
playing a slot machine emulator is a gaming experience without any risk of
losing money. It provides pretty much the same experience as playing casino
games for real money. A slot machine emulator is some sort of evaluation
about deciding whether it is worth playing the real version of the slot machine
game or it is not. It is free of stress and doesn’t contain any financial
risks.

Source: https://vegas7.games/prominent-role-of-the-slot-machine-emulator-in-gambling/