Gambling terms, explained straight

Slots & Gaming Machines

Megaways RTP

Megaways RTP is the percentage of all wagered money a Megaways slot is designed to pay back to players over many spins.

Calculation
RTP is measured as win ÷ turnover in actual performance monitoring.14
UK regulation
There is no statutory minimum %RTP for gaming machines in UK guidance.23

Key points

  • RTP is a long-run average, not a per-spin outcome, so short sessions can differ widely from the stated percentage.25
  • Designed/theoretical RTP is the advertised value; actual RTP is what the game has achieved over the measured period.45
  • Megaways refers to the reel mechanic that changes win ways per spin; RTP describes the average return over time.

Where this term is used

Sources

  1. How to calculate return to player (RTP) gamblingcommission.gov.uk Explains how RTP is calculated as win ÷ turnover.
  2. Return to player - how much gaming machines payout gamblingcommission.gov.uk States there is no minimum RTP for gaming machines in UK guidance.
  3. How can gaming machines meet their %RTP if they are ... gamblingcommission.gov.uk Confirms no statutory minimum %RTP for gaming machines.
  4. Key terms relating to live return to player performance monitoring of ... gamblingcommission.gov.uk Defines theoretical vs actual RTP and the calculation method.
  5. RTP games gamblingcommission.gov.uk Notes that RTP is a long-run average, not a per-spin outcome.

Sources are drawn from regulators, universities and published research, and each one is labelled with what it actually is — a preprint is not called a paper. Bookmaker and affiliate pages are never cited here, because a page that sells betting is not a neutral authority on it.