Casino games are often straightforward, but the language used in them is less so. If you’ve ever played a game of roulette, but found yourself bamboozled by the talk rather than the wheel, then RTP has just the thing, our guide to roulette terms.

Roulette is a truly global game, so a lot of the terms here are specific to French, European, or American roulette, but we have included all of them here so you can be in the know no matter which you play. With that out of the way, let’s get started!

The Terms and Phrases

American Roulette

This form of the game is played on a wheel with 38 pockets comprised of numbers ranging from 1-36, a zero, and a double zero.

Bet on the Layout

This refers to any wager placed on the numbers section of the table.

Biased Wheel

A biased wheel is one where certain numbers have been historically proven to payout more often than others. This is generally based on a player’s own analysis of a table over a long period and won’t be as big a factor in virtual roulette.

Block Betting

This is when a player bets on a group of numbers in one part of the wheel.


The French roulette term for a corner bet, which is a sole wager that one of the four layout numbers will win.


The French roulette name for a split bet.


Another French roulette bet, this time for a column bet. This is when a wager is made on one of the three columns, for a 2/1 payout.


In a physical casino, this is the employee who regulates the play at the roulette table. Basically, it’s a fancy name for a dealer, so you’re unlikely to see it in an online casino. It’s a decent Clive Owen movie too!

Dozen Bet

This is when a player bets on one of three groups of numbers going up in increments of 12, which are 1-12, 13-24, and 25-36, and will award a 2/1 payout.

Double Up Betting

If a player suffers a loss and they respond in the next round by upping their stake by two, they are ‘double-up betting’. Essentially, this is a strategy used to try and recoup some of the lost money.

Double Zero

This is a pocket that only appears in American roulette and is designated with an ‘00’.

En Plein

In French, this means a straight-up bet.

En Prison

Translated as ‘in prison’, this can only work with even-money wagers. It occurs when the house allows a player who has landed zero to take out half of the lost bet. However, they can choose to keep it ‘in prison’, i.e with the house, in exchange for another spin. If you lose that, the whole stake will be lost.

European Roulette

The European variant of the game. There are some key differences here, with only one zero pocket and a generally lower house edge. This version also utilises the en prison rule, so the player has a few more options when playing European roulette.

Even Money

Any bet you make with a payout of 1/1.

French Bets

If a player is making a ‘French Bet’, they are placing several wagers on certain parts of the reel, sometimes so that all the numbers are covered in each. Generally speaking, this strategy is reserved for big-money players, so if you’re new to the game, you probably won’t be using them much.

House Edge

This refers to the calculated advantage lent in the casino’s favour. This is shown as the average percentage they expect to keep off a stake.

Inside Bets

This applies to any wagers made on the inside of the roulette wheel and typically cover single numbers or small groups. These usually have quite high odds attached.

La Partage

Similar to the En Prison rule, but there is no chance for the player to recoup their money with an extra spin. Applies to even money bets made on the ‘outside’ that lead to a zero result.


This is used by the dealer, or croupier as we have learned, to make note of the winning number after each spin.

Mini Roulette

This is an online variant that features a much smaller wheel with just thirteen numbers. Because of this, the payouts are different and many offer half losses back if a spin leads to zero.

Orphans/ Ophenlins

In European casinos, this is a bet three number bet on 6, 34 and 17, which are all next to each other on the wheel, but separated on the layout.

Outside Bets

This term extends to any wager that is placed on the outside of the reel layout. As these often comprise a large portion of the roulette wheel, they offer lower odds and are generally things like even money bets.


This is one of the indents on the wheel where the roulette ball may land and each has a designated number, anywhere between 1-36, split into two halves of black and red. There is also one for zero, coloured green, plus a double zero pocket, if you are playing on an American roulette wheel.

Six Lines

This is a wager comprised of six numbers, covering two rows next to each other, and typically pays out 5/1.


This is a wager placed on two adjacent numbers or, specifically, the intersection between them and is usually priced at 17/1 odds.

Straight Up  

A wager on a sole number, which offers a high payout, usually 35-1.


Another wager, this time made on three numbers lined in a row, with a typical payout of 11/1.

Tiers Du Cylindre

A French roulette term for when you bet on a selection of numbers of the roulette wheel, which will show as paired neighbours on the layout.


The French version of a street bet.

1. Voisins du Zero

This French term refers to a wager placed on a group of numbers adjacent to the zero.


The pocket on the roulette wheel designated by the ‘0’, which can be found on all roulette wheels.

Play Roulette at these Casinos!

Feel a little more confident with the all those fancy French phrases now? If our roulette refresher has got you reaching for the pockets, then you can play many variants of the game at our featured casinos, including KerchingTemple Slots, and Jackpot Jones.

Relax Gaming, the new-breed content provider and distribution platform, has gone live with Big Time Gaming’s hotly anticipated video slot launch, The Final Countdown.

Relax Gaming’s customers will enjoy an extended period of exclusive access to the out-of-this-world, dual feature choice video slot thanks to the speed with which the provider is able to seamlessly integrate new products onto its platform.

Featuring the astronauts Vegas and Venus, The Final Countdown contains two engaging bonus modes, The Countdown and Heading for Venus, which ignite the reels and give players the opportunity to unlock the biggest wins.

“Relax Gaming has delivered on its promise of speed to market, proving its commitment to its partners and the power of its technology. It’s been an impressive start to our new partnership and has earned them almost of month of exclusivity on our latest game release. They’re a pleasure to work with and we’re thrilled to see The Final Countdown out with customers so quickly.”

Nik Robinson, Big Time Gaming CEO

“We are delighted to launch The Final Countdown to our clients in partnership with Big Time Gaming – it is an explosive video slot with unique features that are sure to a prove big hit with players in regulated markets all over the world. Relax Gaming’s speed and commitment to open, ongoing dialogue are key factors in our commercial approach, and it is testament to the success of our philosophy that we are able to offer our partners a period of exclusive access to this title.”

Simon Hammon, Relax Gaming CPO

Relax Gaming is one of only three platform partners selected to distribute Big Time Gaming content, on the back of its commitment to transparency and compliance.

It is a next-generation supplier, offering fresh content and hundreds of games, alongside having signed more than 50 new commercial deals in the past few months.

Slots developer Blueprint Gaming has unveiled the latest addition to its fast-expanding games portfolio with its new Medieval-themed slot, Valletta MegawaysTM.

In this highly volatile 6×5 slot, players are sent back in time and find themselves in the midst of a castle siege, with the reels filled with arrows, cannons and swords.

Three or more cannon symbols activates the explosive free spins round, where every win triggers a streak and winning symbols are locked in place.

On any winning spin, the Arrow Storm feature is randomly triggered, subjecting the reels to a volley of arrows, which fixes random symbols in place and provides players with a greater chance of winning.

The game also features an operator-selectable Valletta Bonus Bet feature, which guarantees direct access into the free spins round.

The explosive slotbecomes the latest Blueprint release tofeature the MegawaysTM mechanic, under licence from Big Time Gaming, which provides players with up to 15,625 ways to win.

“Players will have to battle through the reels to win big in Valletta MegawaysTM, which promises to be one of our most action-packed slots to date. With its immersive and fiery bonus features, we’re looking forward to our latest release going live across our fast-growing network of operators.”

Jo Purvis, Director of Marketing and Relationships at Blueprint Gaming

Casino game and software provider Red Tiger has revealed its first slot in collaboration with Big Time Gaming, Mystery Reels Megaways™.

The 6×7 title combines Red Tiger’s hit slot Mystery Reels with the revolutionary Megaways mechanics to offer winnings of up to 10,000x a player’s stake.

The slot is the first Red Tiger release to feature the popular mechanic, under licence from Big Time Gaming, which varies the ways to win with every spin.

In thefree spins rounds, players can choose to collect eight free spins, or gamble for up to 40. A safeguard ensures that even if the gamble is lost, a minimum of four free spins is awarded.

Mystery Reels MegaWays™ is a fun and immersive addition to our ever-expanding portfolio. With its old-school feel but cutting-edge mechanics and innovative features, such as the mystery symbol and the possibility to risk some free spins for further reward, we are sure it will appeal to players across the spectrum.”

Gavin Hamilton, CEO at Red Tiger

Mystery Reels MegaWays™ is the latest video slot from Red Tiger’s studio and joins a high-quality and consistently growing portfolio, currently standing at over 90 titles.

Habanero is urging players to get climbing to victory with its latest release Mount Mazuma.

With tropical symbols such as bananas and coconuts, the slot starts as a 243 way title, with palm trees on row one and five starting as blocker symbols, much like recent Habanero releaseEgyptian Dreams Deluxe.

Mount Mazuma’s design means both symbols and blockers can double up, introducing the ‘super-ways’ feature which unlocks more spectacular prize eruptions than ever before for players.

“We are always looking for ways to increase the entertainment and engagement value of our titles and Mount Mazuma has helped us achieve that. The special design of our latest release means players have access to more winning lines than ever and that’s sure to excite those hunting for those big wins. We’re really looking forward to seeing it go live.”

Toni Karapetrov, Head of Corporate Communications at Habanero

Pragmatic Play has unveiled its fruitiest slot yet – Extra Juicy.

The clue is in the game title with this online slot, as the symbols have all been designed as colourful pieces of fruit. If getting juicy and experiencing a slice of bubbly gameplay is up your street, then Extra Juicy will most likely be the pick for you.

There are 3 reels and 10 paylines inside this video slot, with there also being classic features like diamonds, bells and, of course, fruit symbols. Players can win from the left to the right, starting from any of the 3 reels. We know that this casino game is all about the healthy items, but the gameplay really is a piece of cake!

Extra Juicy is a fun-filled game that gives players a throwback to the feeling of the traditional fruit-machine. With easy to understand gameplay and an engaging progressive free spins mode, Extra Juicy is a great addition to our portfolio for casual gamers and serious slots fans alike.”

Melissa Summerfield, Chief Commercial Officer at Pragmatic Play

If you are lucky enough, hidden diamonds await on the 1st, 3rd and 5th reels to potentially trigger a progressive multiplier free spins bonus round. Inside this feature, players start with 12 free spins and the win multiplier will gradually increase by 1x after every spin. Now that’s juicy!

Pragmatic Play are known for their vibrant and colourful settings, with Extra Juicy being another title to add to their collection. Within their popular offering is also the launch of Wild Gladiators, alongside their best-performing titles Wolf Gold, Da Vinci’s Treasure and Mustang Gold.

Kalamba Games is adding a seasonal touch to its player favourite Mammoth Chase with an Easter egg hunt full of big wins to be discovered.

Players can celebrate the holiday season with Mammoth Chase: Easter Edition which features traditional Easter characters and symbols such as bunnies, chickens and eggs.

Mammoth Chase is one of Kalamba’s most popular slots, featuring stacked mammoth symbols that combine to award big wins, free spins with a frequent retrigger and multiplier wild symbols.

The 6×4 game has three levels of bonus jackpots that can be triggered with the highest-level jackpot starting from 1000x bet.

“Mammoth Chase: Easter Edition is another seasonal addition to our ever-growing portfolio of games. Seasonal twists to players’ favourite games show the flexibility of our custom game assets and provide our operator partners with a fun promotional tool to engage their players.”

Alex Cohen, COO and co-founder of Kalamba Games

Specialist slots developer Lightning Box has enhanced its partnership with leading UK operator William Hill after agreeing an exclusive omni-channel release of its latest title Lightning Leopard.

The game was rolled out first on terminals in the bookmaker’s shops during ICE 2019, at the beginning of February, and will now be available for their online players for a special five-week period.

We have established a very good relationship with William Hill and it’s great to be able to launch Lightning Leopard exclusivelyboth in their shops and online. The game has been very well-received so far in retail and we’re confident it will generate similar rave reviews once players get their claws into its desktop and mobile online equivalent.”

Peter Causley, CEO of Lightning Box

Lightning Box’s first deal with William Hill was signed in October 2016 when the operator was given exclusive access to the studio’s Silver Lion Deluxe and Panda Power Deluxe titles, following the impressive commercial success of similar models online.

iSoftBet has released its latest blockbuster slot, the Egyptian themed Book of Immortals.

The 5-reel, 10-line slot features classic characters from Egyptian mythology, such as feared God of the Dead Anubis, as well as a collection of fearsome gods and goddesses from Egypt’s fabled past.

The lucky scarab symbol, covered with hieroglyphs, acts as a wild, with the Free Spins mode activated if three or more scarab symbols land on the reels simultaneously.

During Free Spins, one special symbol is chosen, and if enough of them hit the reels they will expand to form wins on all 10 lines, even on non-adjacent reels, and also trigger a new special symbol.

To add to the excitement, any God symbols chosen as the special symbol will become immortal – meaning they can pay as expanded symbols for the entire free spins round, presenting players with the potential to walk away with some epic cash prizes.

Book of Immortals is now available to the wider market following the end of an exclusivity period with Swedish operator LeoVegas.

“We are delighted to announce that after a successful exclusivity period, Book of Immortals is open for general release to our wider partner network. With its fearsome characters and captivating graphics, we are looking forward to Book of Immortals holding an important place in our portfolio for years to come.”

Michael Probert, Chief Commercial Officer at iSoftBet

As with all iSoftBet games, Book of Immortals is supported in both landscape and portrait modes when run on mobile devices and has a wide range of currency and language options.

There is more than meets the eye in Temple of Nudges™. Set among the exotic flora and fauna of a lush, verdant jungle, the 5×3 video slot with 243 betways combines nudges, symbol stacks and re-spins to deliver maximum excitement.

Whenever there is a winning combination on the reels, the nudge feature is activated. After the win is counted up, the reels move one symbol down and if there is a winning combination, the win is counted up again. The nudge feature is activated for as long as there is a winning combination on the reel – and with the long symbol stacks in Temple of Nudges™ there’s a chance the reels could nudge over and over again.

During the Re-Spin feature, all matching winning symbols lock on the reels and all other symbols re-spin adding the chance of an even bigger win.

“Temple of Nudges is a carefully designed and targeted slot game. It is not highly volatile, nor has the game low volatility. It has been designed specifically to deliver strong wins regularly, for players that want a great experience in a short game session.Nudges are a big favourite with players around the world and with us too, so we created a game that is all about nudges delivering great wins. The feeling we created when combining nudges with the re-spins, giving a chance for even longer nudges, is a pretty powerful one. Temple of Nudges™ will be a great and specifically crafted addition to our diverse and deep portfolio,”

Bryan Upton, NetEnt Director of Games