The words behind
the numbers.

Return to player (RTP)

The average proportion of stakes a game’s mathematical model returns as payouts across many plays. It is not a promise about one person’s session. Read the RTP guide →

House edge

The game’s expected operator advantage, often expressed as a percentage of the amount staked. It describes an average, not a fixed fee charged every time. Understand house edge →

Randomness

A lack of a reliably predictable next outcome in the relevant model. Random sequences can contain repetitions and clusters; they do not have to look evenly mixed.

Independence

One event does not change the probability of another. This is an assumption that must fit the process, not a rule that automatically applies to every game.

Variance

A mathematical measure of spread around an average. Two distributions can have the same average and very different patterns of outcomes.

Random number generator (RNG)

A hardware or software system that generates values used by a game. The rules map those values to outcomes; the generator alone is not the complete game design. Look beyond the reels →

Gambler’s fallacy

The mistaken belief that an independent random process owes a particular result because of what happened recently. Why “it’s due” is not evidence →

Near miss

A losing result that looks close to a winning one. Its emotional impact can differ from its mathematical meaning. Explore the psychology →

Progressive jackpot

A prize pool that grows under a defined contribution mechanism, then resets according to the game’s rules. Its size alone is not a countdown to a win. Read the explanation →

Self-exclusion

A process for restricting access to gambling services or venues for a period of time. Coverage and rules vary. It can be one part of a broader support plan. Find independent support →