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Australian gambling information

How do pokies work?

A plain-English introduction to random number generators, return to player, volatility and paylines.

Information guide · Last reviewed 6 August 2026

Results are randomly generated

Modern electronic gaming machines use a random number generator (RNG) to determine each result. This means one spin does not make a future result more or less likely.

RTP and volatility are different

Return to player (RTP) is a theoretical percentage calculated over many plays. It is not a promise about an individual session. Volatility describes how frequently and how sharply outcomes may vary.

A useful rule of thumb

Set a spending limit before you play and treat money spent as an entertainment cost—not a way to make money.

Support is available. If gambling is causing harm, call Gambling Help Online on 1800 858 858 or visit gamblershelp.com.au.