Shorter sessions can cause players' results to fluctuate significantly, resulting in wins & losses that don't match the expected RTP. Players should understand variance or volatreal slots app real moneyility in addition to RTP, as these terms refer to the frequency and magnitude of a machine's payouts. Low-variance slots are appropriate for players who want longer sessions with lower risk because they typically offer frequent but smaller wins. In contrast, high-variance slots might pay out less frequently, but when they do, the jackpots are bigger.