Volatility, or variance, is a vital characteristic that determines how a slot will treat you. Low volatility pays often and small, high volatility pays rarely and enormously. That’s it. That’s as simple an explanation as you can get, but the gap between those two experiences is much wider, and most people won’t discover it until a slot has drained their balance in four minutes and then offer no explanation.
Volatility, of course, is the reason. And to get a few things out of the way, RTP and volatility are not the same. It never pays out to the minute, but honours the RTP , which is what the machine pays back over millions of spins. It does so with a temperament known as volatility, and confusing the two is an expensive mistake.
This guide covers:
- What slot volatility (variance) actually means
- How volatility and RTP differ, and why the two are forever mistaken for each other
- Low, medium and high volatility slots, with examples you can play at OlyBet
- How to check any slot’s volatility before you stake a penny
What slot volatility means
Volatility is the statistical spread of a slot’s outcomes. It’s settled long before anyone presses the spin button and baked into the maths by people who weighted every symbol and timed every bonus on purpose. A low volatility slot is the considerate sort, dispensing frequent, modest wins and letting a balance drift downward in small, forgivable increments.
A high volatility slot on the other hand, is of the brooding sort. Withholding for ages, occasionally for an uncomfortably public length of time, before settling its debts all at once in a single large amount. The frequency of wins and their size travel in opposite directions. Volatility is merely the name pinned to that arrangement. It is always worth remembering though that none of it touches the next spin, which stays stubbornly random however richly a win is felt to be owed by the machine.
Slot volatility vs RTP: the difference people miss
RTP, or Return to Player, is a long-run percentage delivered randomly. Theoretically, a 96% slot returns roughly 96 for every 100 staked, a figure averaged over millions of spins and therefore of no real use to players with finite bankrolls. Volatility decides the manner of delivery: a steady trickle of small wins, or a long, sullen silence broken by a windfall.
The two numbers have nothing to do with one another. Blood Suckers by NetEnt carries a startling 98% RTP and the temperament of a low volatility slot, paying small and often, while a high volatility game can advertise the very same number and behave nothing alike.
Low volatility slots
Low volatility slots pay out often with small wins. This stretches a budget and is perfect for beginners, careful players and anyone working through bonus wagering requirements. The sessions are long, the swings are polite, and the life-altering win is simply not on the menu.
Perhaps the best specimen of that sort is Starburst by NetEnt, a low volatility slot with 96.09% RTP. With expanding wilds and win-both-ways paylines it keeps the small wins coming at dependable intervals. If you’re looking for low volatility slots specifically, this is the template the whole category copies. Play Starburst online to feel how a gentle maths model behaves.
Medium volatility slots
Medium volatility slots occupy the reasonable middle. Wins land often enough to hold the attention and large enough to register on it. Gonzo’s Quest, also by NetEnt makes the point neatly, dropping avalanche reels and free-falling multipliers around a 95.97% RTP, with swings a sensible adult can absorb. This is the tier where the greatest number of players quietly settle. A little waiting and a little reward, in moderate doses, is the balanced way most people prefer.
High volatility slots
These slots are for the constitutionally optimistic: long droughts, the rare and magnificent payout and a bankroll that needs supervision at all hours. Play’n GO’s Book of Dead has set the standard at 96.21% with its single symbol that expands during free spins to determine the entire fortune.
Pragmatic Play’s Sweet Bonanza drops the grid and piles up multipliers up to 100x at 96.51%. Then there are the very high volatility slots, where Dead or Alive II and Razor Shark trade in frequent wins for the kind of result that you’ll talk to your friends about.
If you are the kind of player to chase the best high volatility slots the advice is to arrive with patience and a firm limit. Barren stretches are precisely what the spikes cost.
The best slots by volatility: a comparison
Sorted from low to very high. RTP figures are the highest published configurations; operators can run lower versions, so the paytable is always the final word.
| Slot | Provider | Volatility | RTP | Notable Feature |
|---|---|---|---|---|
| Starburst | NetEnt | Low | ~96.09% | Expanding wilds, win-both-ways re-spins |
| Gonzo’s Quest | NetEnt | Medium | ~95.97% | Avalanche reels, multiplier free falls |
| Mega Moolah | Microgaming | Medium-high | ~88.12% | Four-tier progressive jackpot wheel |
| Book of Dead | Play’n GO | High | ~96.21% | Expanding symbol, free spins retrigger |
| Sweet Bonanza | Pragmatic Play | High | ~96.51% | Tumble feature, multipliers up to 100x |
| Dead or Alive II | NetEnt | Very high | ~96.82% | Three free-spins modes, sticky wilds |
| Razor Shark | Push Gaming | Very high | ~96.70% | Mystery stacks, unlimited multiplier |
Mega Moolah is the odd one out: its base RTP looks low because a slice of every spin funds the jackpot. That is normal for progressive jackpot slots, where the headline prize, not the base game, is the point.
How to check a slot’s volatility
Working out whether a slot runs hot or cold before committing to it spares a great deal of later regret. Four approaches will do.
- Tap the “i” or paytable button most providers include, visible inside OlyBet’s online casino and the OlyBet app; many studios state a volatility rating outright, in words or on a one-to-five scale.
- A wide gap between top and bottom symbol payouts, plus heavy reliance on a bonus round, signals high volatility. A flat paytable with frequent line wins signals low.
- Providers publish RTP and volatility, and independent test houses such as Gaming Laboratories International verify that a slot’s real maths match its claims.
- A monstrous top prize, anything in the tens of thousands times the stake, is a near-certain sign of high variance.
Which volatility suits you?
The truthful answer turns on budget, patience and a person’s private appetite for risk. A modest bankroll and an evening to fill argue for low volatility. An iron tolerance for nothing happening and a hunger for one enormous moment argue for high. Volatility belongs to slots alone, incidentally, which is why the live casino conducts its business by an entirely separate set of rules.
FAQ
What does volatility mean in slots?
Volatility, or variance, measures how often and how large a slot’s wins tend to be. Low volatility delivers small, frequent wins; high volatility delivers rare but larger ones. It is set by the game’s maths and does not affect the randomness of any single spin.
Is it better to play high or low volatility slots?
Consult the game’s information panel for a stated rating, inspect the paytable for a wide gulf between high and low symbol values, and note the published RTP and maximum win. A conspicuously large maximum win is almost always the mark of high volatility.
How can I tell if a slot is high or low volatility?
Check the game’s info panel for a stated volatility rating, scan the paytable for a wide gap between high and low symbol payouts, and look at the published RTP and maximum win. A very large maximum win usually signals high volatility.
Play responsibly
Volatility is a polite word for swings, and high variance in particular can drain a balance quickly between wins. A deposit limit, a loss limit and a time limit keep the entertainment where it belongs. OlyBet, a casino and sportsbook provider licensed in Estonia, offers all three through OlySafe responsible gaming. Use them before volatility uses you.
