Glossary

"Calculated using the generated win and turnover figures of the live (operational) game"; it "shows the RTP the game has actually achieved for the past period".

Used in: A 95% RTP describes millions of spins, not the one you're about to play, Two RTP figures need a version check before a comparison

What RTS 7A calls a compensated game: results adjusted in response to what has already happened. It is not permitted.

Used in: Near misses: what the standard says and what a session shows

The prize figure measured before subtracting the stake paid to take part; 95p per £1 play at 95% RTP.

Used in: What does online slot RTP mean? Two games, one average

One complete play, from the start of a game to the point at which the next one may begin. RTS 14D sets a floor of 2.5 seconds for slots.

Used in: Near misses: what the standard says and what a session shows

Which mode the game is in, such as the base game or a named feature; the same count can award different things in each.

Used in: A wild does not automatically count as a scatter

For these toy games, the probability of receiving any prize greater than zero.

Used in: What does online slot RTP mean? Two games, one average, Two RTP figures need a version check before a comparison

The mathematical expected loss expressed as a proportion of the stake for a defined rule set.

Used in: A 95% RTP describes millions of spins, not the one you're about to play

The volume of play a measurement covers. The Commission's table starts at 50,000 plays; a leisure session is a few hundred or a few thousand.

Used in: A 95% RTP describes millions of spins, not the one you're about to play

A losing result displayed so that a winning position looks nearly reached. RTS 7C does not permit one losing outcome to be substituted with a different losing outcome to produce this.

Used in: Near misses: what the standard says and what a session shows

The difference between money returned and money staked in the calculation being described.

Used in: What does online slot RTP mean? Two games, one average

The game's own list of symbols, awards and conditions; the place its substitution and trigger rules are written.

Used in: A wild does not automatically count as a scatter

The probability of receiving more than the £1 stake; a return of the stake alone is not counted.

Used in: What does online slot RTP mean? Two games, one average

A theoretical average proportion of stakes returned as prizes over many plays; not a session guarantee.

Used in: What does online slot RTP mean? Two games, one average, Near misses: what the standard says and what a session shows, A 95% RTP describes millions of spins, not the one you're about to play, How many spins is RTP based on?: what the maths sheet says and what a session shows

A ratio between expected prizes and stakes. It describes a game over many plays, not a particular spin or a deposit.

Used in: What does online slot RTP mean? Two games, one average, Two RTP figures need a version check before a comparison

Return to player: the share of stakes a game is designed to return over a very long run. It cannot be read from a symbol's artwork.

Used in: A wild does not automatically count as a scatter

Return to player: the share of stakes a game is set to pay back across a very large number of results. RTS 3C names it as information that must be easily available beforehand.

Used in: Near misses: what the standard says and what a session shows

The Gambling Commission's remote gambling and software technical standards; RTS 3 covers rules and RTS 7 random outcomes.

Used in: A wild does not automatically count as a scatter

A symbol whose award or trigger is counted by position rather than on a payline, as the game's rules define it.

Used in: A wild does not automatically count as a scatter

The amount put at risk in a particular bet.

Used in: What does online slot RTP mean? Two games, one average, Near misses: what the standard says and what a session shows, A 95% RTP describes millions of spins, not the one you're about to play, Two RTP figures need a version check before a comparison

A compact way to quantify the spread of outcomes: the dispersion of the gross prize around the mean for one £1 draw. It is not an operator’s volatility label.

Used in: What does online slot RTP mean? Two games, one average

"The designed return to player percentage of the game", the figure advertised and shown in the player-facing rules. A design target set before the game ships.

Used in: A 95% RTP describes millions of spins, not the one you're about to play

The band around the theoretical figure the Commission's monitoring guidance allows, sized using "a 95% confidence interval" and narrowing as plays accumulate.

Used in: A 95% RTP describes millions of spins, not the one you're about to play

The total amount staked over the period being measured. It is not the amount deposited or the balance left in an account.

Used in: Two RTP figures need a version check before a comparison, A 95% RTP describes millions of spins, not the one you're about to play, How many spins is RTP based on?: what the maths sheet says and what a session shows

"Most commonly the standard deviation of the game": the figure that sets how wide the tolerance band around the average is.

Used in: A 95% RTP describes millions of spins, not the one you're about to play, Two RTP figures need a version check before a comparison, What does online slot RTP mean? Two games, one average, How many spins is RTP based on?: what the maths sheet says and what a session shows

A symbol that may stand in for other symbols when a line is evaluated, subject to the exclusions its own rules list.

Used in: A wild does not automatically count as a scatter

A request to transfer eligible funds out of an account through a supported method.

Used in: What does online slot RTP mean? Two games, one average