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Basics

Glossary

Key terms in plain English.

Reviewed by the editors: October 2026 · Educational content

House edge
The built-in mathematical advantage of a game — the average share of every bet the house keeps.
RTP
Return to Player — the theoretical share of wagers paid back to players on average over a very large number of rounds.
Volatility
How widely results swing: rare big wins versus frequent small ones.
RNG
Random Number Generator — the software that decides each round's outcome independently.
Chasing losses
Placing new bets to win back money already lost — one of the clearest warning signs.
Wagering requirement
A bonus condition: how many times you must bet an amount before you can withdraw.
Self-exclusion
A voluntary ban on access to gambling for a set period.
Near-miss
An outcome that looks close to a win and creates the illusion of almost winning.
Deposit limit
The maximum amount you can add to an account in a set period.