Riddle of the Sphinx: Slot Overview

’Which creature has one voice and yet becomes four-footed and two-footed and three-footed?’ The Sphinx said to have guarded the Ancient Greek city of Thebes supposedly challenged would-be entrants with that question. Anyone who answered correctly – ‘man’ – earned passage into the city. Anyone who failed didn’t simply get refused; they were put to death. When Oedipus solved the riddle, the Sphinx either threw herself from a cliff or was slain by the Greek hero. Either way, she met a grim end. Thankfully, Riddle of the Sphinx from Red Tiger doesn’t lean into the brutality of the old myths and legends.

It’s not especially Greek, either. In Riddle of the Sphinx, the focus shifts to another ancient culture: Egypt, home to its own iconic Sphinx. A slot inspired by the lesser-known Theban Sphinx might have felt fresher than yet another Egyptian-themed release, but here we are—those desert kingdoms still have a powerful pull for slot creators. And clearly, plenty of players enjoy the setting too, since demand keeps the theme alive. That said, you’ll likely get more out of Riddle of the Sphinx if you’re really into the theme, because overall it isn’t exactly a must-play.

Visually, Riddle of the Sphinx is a pleasant-looking title, with a 5-reel, 20-payline layout hovering above the Egyptian sands as pyramids glow in either dusk or dawn light. Players can pick the time of day they prefer. There’s no crumbling rubble or rough stonework here—these pyramids are shown in their prime, back when their caps were plated in gold or electrum. The rest was clad in limestone too, which must have been spectacular in its heyday. The scenery is paired with a familiar-style soundtrack, broken up by little bleeps and bloops that give Riddle of the Sphinx a slightly old-school, physical slot vibe.

The riddle-solving happens on any device, with stakes selectable from 10 p/c to $/€10 per spin. The math model is volatile for this desert adventure, although—like finding water in the sands—there are a couple of features that triggered fairly frequently during testing. Still, it’s the desert, so don’t expect a flood of action, and the theoretical default RTP sits at 95.66%. In the paytable, there are 9 symbols in total: low pays are 10-A card icons that need 3 or more to pay, while the high pays return winnings with 2 or more in view. Most of the imagery will look familiar from many other slots, including premium ankhs, hand-fans, eyes, and scarabs—landing 5 of a kind with the top symbols pays 15 to 50 times the stake.

Riddle of the Sphinx: Slot Features

Watch for the 1×2 sized Pharaoh symbol, which acts as the wild. When it lands, it also turns all neighbouring symbols into wilds. This is the Dynasty wild feature, which can appear throughout the game, but shows up more often during free spins.

Hit 3 scatter symbols on reels 1, 3, and 5 to activate the Pharaoh free spins bonus. To make it easier to reach, whenever a Pharaoh Free Spins symbol lands, it is locked into place for the following spin. Any additional scatters that appear are locked as well.

Before free spins begin, players pick from 4 free spins options. Each choice provides a different number of free spins and multiplier values. The first three options award 6, 12, or 24 free spins with multipliers of 8x, 4x, or 2x. The fourth is a mystery pick that can grant any mix of those free spins and multiplier combinations. During free spins, the selected multiplier is applied to wild symbols. Any winning line that includes a wild has the multiplier added to it. Finally, multiple wilds do not raise the multiplier further.

Riddle of the Sphinx: Slot Verdict

Despite the riddle theme, Riddle of the Sphinx doesn’t really trade in mysteries. The play is simple—keep spinning and hope to trigger Pharaoh free spins, where Pharaoh multipliers can do the heavy lifting. Along the way, Dynasty wilds add some extra flavour to the base game, though they often seemed to appear far over on the right side of the reels and didn’t always contribute much. Now and then, they’d connect for a decent hit that helped pad the bankroll and extend the session.

Pharaoh free spins are the main attraction, and they’re where the largest payouts can happen. They also bring the usual dilemma that these Blueprint Gaming-style pick bonuses are known for: play it safe and see what a 2x multiplier can do across 24 spins—since that’s a lot of free spins—or take the 8x and trust that 6 spins will deliver something big? Whichever route you take, the game’s top potential reaches 8,002x the stake.

Red Tiger already has a handful of Egyptian-themed slots in its library, though it’s been some time since the last one arrived. Often, their Egypt titles are easy to forget soon after a session ends. One possible exception is Vault of Anubis, since it’s the only one they built as a grid slot. After a decent run of spins, Riddle of the Sphinx feels like it may end up as another disposable entry. It’s enjoyable enough while you’re playing, the potential is solid, and the features are respectable, but the overall presentation doesn’t leave much of a lasting impression—and unless you land a huge win, it’s not the kind of slot that lingers in your memory once you’re done.