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 volatpulsz slotsility 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.