Read the paytable first
Understand the winning combinations, stake range and how any bonus rounds work. Features differ from game to game, even when the artwork looks familiar.
Put return figures in context
A published return-to-player percentage describes a theoretical long-run model. It is not a promise about your session or a way to predict the next spin.
Understand volatility
Volatility describes the pattern of payouts, not a guarantee of winning. Higher volatility can involve long stretches without a meaningful payout.
Keep control of the pace
Decide a money limit and a time limit before playing. Stop when either is reached. Faster play does not improve the odds and can accelerate losses.