RTP estimates a game’s long-run return: 96% RTP means a 4% house edge on...

https://zulu-wiki.win/index.php/Does_96%25_RTP_Mean_I_Get_96p_Back_for_Every_%C2%A31_Tonight%3F

RTP estimates a game’s long-run return: 96% RTP means a 4% house edge on average. Volatility affects how wins and losses are spread out. In a short session, results can differ sharply from the average, and your balance may drop quickly.