When choosing a
casino game, players can look beyond its theme, features and potential prizes. RTP and volatility are two useful measures that provide information about how a game is mathematically designed to perform.
RTP, or Return to Player, indicates the theoretical percentage of wagers a game is designed to return over a very large number of rounds. Volatility describes how those returns may be distributed, including the frequency and size of payouts.
Understanding both can help South African players compare games and set realistic expectations. However, neither measure guarantees a win, predicts the outcome of a particular spin or removes the casino's mathematical advantage.
What Is RTP?
RTP stands for Return to Player. It is the theoretical percentage of wagered money that a casino game is designed to return to players over a very large number of game rounds.
For example, a game with a theoretical RTP of 96% is designed to return an average of R96 for every R100 wagered over extensive play. This does not mean that a player who wagers R100 will receive R96 back, or that they are guaranteed to lose R4 during a particular session.
RTP is a long-term mathematical calculation. Actual results can be substantially higher or lower over shorter periods because individual game outcomes are subject to randomness. The UK Gambling Commission notes that the gap between actual and theoretical RTP can be wider when only a limited amount of play has been measured, with the tolerance narrowing as the volume of play increases.
Generally, a higher RTP means a lower theoretical house edge, all else being equal. For example, a 96% RTP corresponds to a theoretical house edge of 4%.
Players should also check the RTP of the specific game they are playing. Different versions, configurations or settings can have different RTP figures. The information is often available through the game's rules, help section, paytable or information menu.
What Is Volatility?
Volatility, sometimes called variance, describes how a game's payouts are distributed. It gives an indication of whether a game tends towards smaller, more frequent wins or larger, less frequent results.
The UK Gambling Commission describes high-volatility games as potentially containing very large but rare prizes, while low-volatility games tend towards smaller and more frequent prizes.
Low volatility
Low-volatility games generally produce smaller wins more frequently.
Potential advantages:
- Balance changes may be less dramatic.
- A playing budget may sometimes last longer.
- They may suit players who prefer more frequent, smaller results.
Potential disadvantages:
- Individual wins are generally smaller.
- Players seeking large potential multipliers may find them less appealing.
Medium volatility
Medium-volatility games sit between the two extremes, aiming to provide a balance between win frequency and potential payout size.
Potential advantages:
- They can offer a middle ground between frequent smaller wins and less frequent larger wins.
- They may suit players without a strong preference for either extreme.
Potential disadvantages:
- Results can still vary considerably.
- "Medium" is not necessarily calculated or displayed in exactly the same way by every game provider.
High volatility
High-volatility games generally produce meaningful wins less frequently, while offering the possibility of larger payouts when wins occur.
Potential advantages:
- They may offer larger potential multipliers or maximum wins.
- They can appeal to players who prefer more variable gameplay.
Potential disadvantages:
- Longer periods without meaningful wins can occur.
- A playing budget may decrease quickly during an unfavourable session.
- Large potential payouts remain rare and are never guaranteed.
RTP vs Volatility: What Is the Difference?
The simplest way to distinguish the two is:
- RTP describes the theoretical amount a game is designed to return over the long term.
- Volatility describes how the game's results and payouts are distributed.
Consider two games that both have a theoretical RTP of 96%. They can still feel very different to play. One might produce relatively frequent, smaller wins, while the other might produce fewer wins with the possibility of much larger payouts.
In other words, RTP and volatility measure different things. A high RTP does not automatically mean low volatility, while high volatility does not mean a game has a higher RTP.
RTP also should not be interpreted as a prediction of what will happen during the next spin, the next 100 spins or a particular playing session.
Why Check RTP and Volatility Before Playing?
Looking at both measures can provide useful information when comparing casino games.
1. Understand the theoretical return
RTP provides a mathematical reference that can be used when comparing games. A higher theoretical RTP generally corresponds to a lower theoretical house edge.
2. Match your preferences
Volatility can help you identify whether a game is designed around more frequent, smaller results or less frequent, potentially larger payouts.
3. Consider your playing budget
High-volatility games can produce larger fluctuations in a player's balance. Lower-volatility games may produce a steadier pattern of results, although losses can still occur.
4. Set realistic expectations
Understanding RTP helps prevent a common misunderstanding: a 96% RTP does not mean you are entitled to receive 96% of your money back during an individual session.
5. Compare similar games
If several games have similar themes or features, RTP and volatility provide additional information that can help distinguish between them.
Pros and Cons of RTP
Pros:
- Provides a standard theoretical measure for comparing games.
- Helps explain the casino's long-term mathematical advantage.
- Can support more informed game selection.
Cons:
- Does not predict short-term results.
- Does not indicate how frequently a game will produce wins.
- A high RTP does not guarantee a winning session.
- Published RTP figures can differ between game configurations.
Pros and Cons of Volatility
Pros:
- Helps describe the expected pattern of payouts.
- Makes it easier to identify games that match a preferred playing style.
- Can help players anticipate potentially larger balance fluctuations.
Cons:
- Volatility ratings may differ between providers.
- A rating does not predict exactly when a win will occur.
- High volatility does not guarantee a large payout.
- Some games may not clearly publish their volatility information.
How to Check a Game's RTP and Volatility
Checking the information is usually straightforward:
- Open the game.
- Select the information, help or menu icon.
- Review the rules, paytable or game information.
- Look for the RTP percentage and volatility rating.
- Check the information for the specific game and configuration you are playing, rather than relying only on a general review.
If a game's volatility is not displayed, do not assume that it is low, medium or high. The absence of a rating simply means that you should look for other reliable game information.
Play Responsibly
RTP and volatility are useful informational tools, but they are not winning strategies. RTP is a theoretical long-term measure, while volatility describes the distribution of results; neither can guarantee a particular outcome.
South Africa's National Gambling Board (NGB) oversees the regulation of gambling nationally and works with provincial licensing authorities. The NGB also promotes responsible gambling and provides information about verified operators.
Players should set spending and time limits, avoid chasing losses and only gamble with money they can afford to lose. If gambling starts causing financial or personal difficulties, support is available through South Africa's National Responsible Gambling Programme. The NGB lists its 24-hour toll-free helpline as 0800 006 008, with WhatsApp support available on 076 675 0710.
Ultimately, understanding RTP and volatility can make casino-game information easier to interpret. The key is to use these measures to understand a game's mathematical characteristics, rather than treating them as a way to predict or guarantee future results.
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