RTP is a long-run average, not a promise for tonight: a game with 96% RTP has a...

https://www.nav-bookmarks.win/rtp-is-a-long-run-average-not-a-session-promise-96-rtp-means-a-4-house-edge

RTP is a long-run average, not a promise for tonight: a game with 96% RTP has a 4% house edge, meaning the casino keeps about 4p per £1 wagered over time. Volatility shapes how wins and losses are spaced; short sessions can swing sharply either way.