There is no definitive answer to this question as it depends on a number of factors, including the specific game being played and the online casino hosting it. However, in general, the RTP (return to player) of free online slots is lower than that of slots that require a real money wager to play. This is because online casinos need to make a profit in order to stay in business, and they do this by taking a cut of the money that is wagered by players.n