Red Door Roulette (Evolution)

What Red Door Roulette (Evolution) is

The game mixes two of Evolution's best-known games. The base is a single-zero roulette table, like European roulette. On top sits the idea behind Lightning Roulette: before the ball settles, some numbers are picked out at random for special treatment. Here those numbers carry Keys, and a Key opens the red door into the bonus game borrowed from Crazy Time.

Evolution's launch announcement (opens in a new tab) dates the game to 8 November 2023. The Red Door Roulette game page (opens in a new tab) calls it a roulette game show with a Crazy Time bonus twist, and that is a fair description: the table is roulette, but the pay structure behaves like a live game show.

How a Red Door Roulette round works

1. Place chips on the betting grid before betting time runs out.
2. An automatic wheel launches the ball.
3. The dealer pulls a lever to start a slot machine, which stops on a Bonus Number between 3 and 15.
4. That many Keys are dropped on random numbers, no more than one per number.
5. Sometimes the animation also reveals a multiplier between 2x and 20x.
6. The ball settles in a pocket: a winning straight-up bet pays 19:1, multiplied if the number carries a multiplier.
7. If your straight-up number wins and carries a Key, you go to the bonus round, and any multiplier on the Bonus Number is applied to the bonus wheel's multiplier segments.

Evolution's page explains straight-up bets and the bonus. For how outside bets such as red or black pay in this game, and whether a Key win also pays the 19:1, read the in-game help screen.

The 19:1 straight-up payout and why it matters

On a standard single-zero wheel a straight-up bet pays 35 to 1 and wins 1 time in 37, which gives the familiar 2.70% house edge. Red Door Roulette's straight-up pays 19:1 instead. Without any Keys, multipliers or bonuses, a £1 straight-up would return £20 one time in 37, so it would give back only 20 ÷ 37 = 54.05% of what you stake.

That missing 46% is not lost to the casino; most of it is moved into the extras. The multipliers on numbers and the Crazy Time bonus wheel have to fund nearly half of the straight-up's return. The result is a bet that pays less often than standard roulette and relies on rare, larger results. Evolution doesn't publish the RTP on its game page, so the overall edge is something to read in the help screen.

Each base return is (payout + 1) ÷ 37. The lower it is, the more of the game's return depends on rare extras, and the wider the swings in a session. Our true odds vs payouts page explains the idea.

Red Door Roulette odds: Keys and bonus entry

The Keys are placed at random, between 3 and 15 of them, on the 37 numbers. That makes it simple to work out the chances, assuming every number is equally likely to receive a Key.

The sum is (Keys ÷ 37) × (1 ÷ 37). With three Keys, a single straight-up chip reaches the bonus about once in 456 spins; with fifteen, about once in 91. Spreading chips across more numbers raises your chance of the bonus but also raises your stake by the same proportion, so the expected cost per pound staked stays the same.

If you covered every number

Putting a chip on all 37 numbers shows the structure clearly. You would always win one straight-up at 19:1, getting back 20 chips from 37, a loss of 17 chips before any boost. You would reach the bonus whenever the winning number carried a Key: 3 in 37 rounds at the low end, 15 in 37 at the high end. It is an expensive way to chase the bonus, and it doesn't change the edge.

The Crazy Time bonus wheel behind the red door

The bonus is the Crazy Time wheel: a 64-segment wheel of multipliers with doubling segments. A flapper points to the winning segment and its multiplier is applied to your winnings. If it lands on DOUBLE, every multiplier on the wheel doubles and the wheel spins again. If the Key number you hit carried a multiplier, that multiplier is applied to the wheel's multiplier segments before the spin.

Evolution doesn't list the values of the 64 segments on the Red Door Roulette page, and we haven't verified a maximum win, so check the help screen. With 64 segments, any single segment has a 1 in 64 (1.56%) chance on each spin of the wheel. For the original version of this bonus, see our Crazy Time guide.

What Red Door Roulette costs in pounds

The cost per round is stake × house edge, but the edge has to come from the help screen. To show how much the choice of game matters, here is the same £2 straight-up across three edges: the 2.70% of a European wheel, and two illustrative higher edges for a boosted game.

Averages hide the swings. Because a straight-up only pays 20 chips back when it wins, a run of losing spins drains a budget faster than standard roulette's 36 chips back would. If you want steady, low-cost roulette, the plain single-zero table or French roulette with La Partage is cheaper to play.

Who Red Door Roulette suits

It suits a player who enjoys the Crazy Time bonus and wants roulette as the route in, with a small stake and a firm budget. It doesn't suit anyone looking for the lowest cost per spin; for that, see our list of games with the best odds.

Red Door Roulette myths and betting systems

• Keys favour numbers that haven't hit lately. Keys are dropped at random each round; past results don't steer them. See hot and cold numbers.
• Covering more numbers improves your odds of profit. It raises your chance of reaching the bonus, but your stake rises in step, so the edge per pound is unchanged.
• A progression will catch the bonus eventually. Doubling after losses doesn't change the edge and can run into table limits fast; see our roulette betting systems page.
• The dealer controls where the ball lands. An automatic wheel launches the ball, and the Keys come from the slot animation, not the dealer's choice.

Red Door Roulette in the UK

Red Door Roulette is a live casino game, so UK slot stake limits of £5 and £2 don't apply; table limits do. The Gambling Commission's rules for all online casino games apply instead. The Commission's autoplay decision (opens in a new tab) brought live casino into the autoplay ban from 17 January 2025, while noting that a re-bet button isn't autoplay. Non-slot games must allow at least 5 seconds per game cycle, you can't play several games at once, and net spend and time played must be visible as you go.

You must be 18 or over and verified, and credit cards can't be used to gamble. If you need support, the National Gambling Helpline (0808 8020 133) is free and open all day, every day. Our UK rules for live casino and safer gambling pages explain the details.

Where to play Red Door Roulette online

Our partner offers are slot offers, not roulette bonuses, and we can't confirm which partner carries Red Door Roulette: check the live lobby. Roulette and live games are often excluded from bonus wagering or count less towards it, so read the terms first. 18+ and terms apply.

Casumo offers new customers who opt in 50% up to £100 on a first deposit of £20 or more, with 10x wagering on the bonus within 7 days, a £5 maximum bet and game, play and payment restrictions. 10bet matches the first deposit 100% up to £25 for new UK customers who choose it at sign-up, with 10x wagering on slots inside 3 days, bonus winnings capped at £1,000 and Skrill and Neteller excluded. Coral's new-player offer, running 1 October 2026 to 1 February 2027, gives 100 free spins at 10p each on selected slots once you deposit and bet £10 on slots; accept within 48 hours, use within 7 days, no wagering on winnings, and several deposit methods, including PayPal, don't qualify. Our roulette bonus page explains how roulette is usually treated.

18+. Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: safer gambling tools and support. Free, confidential help: National Gambling Helpline 0808 8020 133.