Riddle of the Sphinx Online Slot

Published: May 31st, 2021 | Updated: Sep 7th, 2023
Published: May 31st, 2021 | Updated: Sep 7th, 2023
Game Provider
Maximum win
Progressive Jackpot
Bonus Feature
Ancient Egypt
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Slot Setup and Betting Options

  • 05.27.2021 Release Date
  • 5 Reels
  • 4 Rows
  • Autoplay Option
  • 3D Graphics
  • Mobile Version
  • $0.10 Minimum Bet
  • $100.00 Maximum Bet
  • $5.00 Maximum Bet Line
  • 20 Paylines
  • Win Both ways

Riddle of the Sphinx Online Slot Review

A golden pharaoh mask, scarab beetle, and Eye of Ra are among the classic emblems of ancient Egypt featured in the Riddle of the Sphinx online slot. This 5-reel game has 20 paylines, and the gorgeous graphics that we have come to expect from developer, Red Tiger.

Spreading wild symbols help to complete combinations across the reels of this desktop and mobile game. The Riddle of the Sphinx slot also comes with a choice of free spins bonus features, where you select from a varying number of spins with different quantities of wilds available.

You can win over 8,000x your wager when you play this game. There’s a high volatility and average returns of 95.66% from this generous pharaoh.

How to Play the Riddle of the Sphinx Slot

Rolling sand dunes and pyramids topped with gold and white stone form an impressive backdrop to the 5x4 reel set. An ornate gold frame surrounds the symbols, and you’ll see Egyptian-style high card icons, plus a variety of jeweled beetles, crosses, and other items. It’s a great-looking example of this hugely popular topic and works across PCs, iOS, Android, and Windows mobiles.

It’s very easy to set up and the Riddle of the Sphinx slot is suitable for players with any level of skill and experience. Click the ‘Stake’ button and you’ll see all of the wagering options from 0.20 to 100.00, Auto and Turbo modes are triggered by a click on the relevant tabs, and you access the paytable by a tap on the 3 small lines at the top of the game.

This shows you how much you win whenever 3 or more matched symbols land on a payline, starting from the left reel. There’s also useful information on the bonuses, such as the spreading wilds and various free spins options.

Free Games & Other Riddle of the Sphinx Slot Features

The golden pharaoh wild symbol is all-important. A Dynasty Wilds feature causes the wild to expand across adjacent symbols, which makes it easier to see winning combinations.

A scatter symbol in any 3 places at once will reveal several free spins options. If just a single scatter lands, it locks in place for the next spin to give you a second chance to trigger the bonus. You can pick from just 6 free games, with wild multipliers of 8x, or select 12 bonus games where wilds multiply wins by 4x. Another option triggers 24 spins at the top New Jersey online casinos or the best Pennsylvania online casinos and all wins with the wild are doubled in value.

There’s a fourth, mystery option and if you take this, you could get lucky and land 24 spins with an 8x multiplier, or unlucky and get the 2x multiplier and just 6 free games. Extra Dynasty Wilds appear in the round, although you can’t retrigger this feature of the Riddle of the Sphinx slots game.

Slot Features

  • Multipliers
  • Scatters
  • Wild symbol
  • Free Spins
  • Multiplier wilds
  • Expanding wilds
  • Re-spins
  • Quickspin
  • Gamble feature

Riddle of the Sphinx Slot Machine Maximum Wins, Average Returns & Volatility

With the perfect mix of symbols and multipliers in the free games you can win 8,000x your total wager, or a huge 800,000.00 prize at the highest stake. This is a game with a high level of volatility and the overall return to players percentage is slightly lower than we like to see, at 95.66%.

Our Riddle of the Sphinx Slots Game Rating

Fans of Egyptian-themed online Slot Games will love the iconic golden symbols on the reels of the Riddle of the Sphinx slot. It’s a highly attractive game and follows the most popular slot machine topic of all.

The Dynasty Wilds feature is a great way to complete extra combinations, and while it won’t always lead to a win, we found that it certainly helps. The choice of free spins depends on your appetite for risk. Do you choose just a few games, but a potentially huge payout from 8x wild multipliers, or play safe with 24 extra games, but a 2x multiplier? Why not select the Mystery option and see what fate has in store for you?

Be sure to play the Riddle of the Sphinx slot machine at the best Red Tiger sites, where the biggest new player welcome deals are available? Simply check out our list and also BetMGM New Jersey bonus code for more information.


To win cash prizes from the Riddle of the Sphinx slots game you need to land 3, 4, or 5 examples of the same symbol across a payline from the left side. The wild symbol helps out by standing in for others if needed.

You trigger a free spins round whenever 3 bonus symbols land at once. There are 4 options here, with between 6 and 24 spins, and 2x to 8x wild multipliers available. A Mystery option awards a random combination of free spins and multiplier wilds.

The Riddle of the Sphinx slot is a high volatility game where the relative infrequency of winning spins is countered by higher than average prize values. Low volatility games work in the opposite way, paying out lots of smaller wins, and medium variance slots sit somewhere in the middle.

Yes, you can. The Riddle of the Sphinx slot has been developed from the outset to work on mobiles in just the same way as the desktop version. It’s fully compatible with iOS, Android and Windows devices.

This is a game themed around ancient Egypt and uses many of the classic elements seen across similar games. Play the Riddle of the Sphinx slot machine and you’ll see an ankh, Eye of Ra, scarab beetle, and the golden pharaoh mask on the reels.

The pharaoh wild symbol triggers a Dynasty Wilds feature whenever it lands on the reels of the Riddle of the Sphinx slot. The wild spreads across to any adjacent symbol position, which makes it more likely that it can stand in for others and complete wins.

The Riddle of the Sphinx slot is a game with 20 paylines. Any time 3, 4, or 5 matched symbols land across a payline, on connected reels starting from the left side, you win a prize. There are 20 different ways to line them up for a win.

Any slot themed around ancient Egypt will find a huge army of fans. The Riddle of the Sphinx online slot looks good, with plenty of iconic symbols on display, and it comes with some rewarding features. The choice of free spins rounds, with a balance between the number of spins and wilds, is a real highlight.

The maximum wager on the Riddle of the Sphinx slot is a generous 100.00 per spin. You don’t have to wager this much, but the more you wager, the higher the prizes can be. Only ever play with money that you can afford to lose.

Red Tiger Gaming launched the Riddle of the Sphinx slot machine on 27th May 2021.

Meet Our Slot Tester

Bill Speros

Senior Producer at Gambling.com

With more than 30 years of experience in Sports journalism and online gaming, Bill has put a bevy of slot games through their paces. He focuses on getting a jump on what sets games apart from a jackpot, feature and thematic standpoint ahead of their release.