Jungle Jim and the Lost Sphinx slot
Jungle Jim and the Lost Sphinx is a Microgaming slot built exclusively for it by Stormcraft Studios, and it starts on 5 reels, 4 rows and 35 paylines. Rolling Reels drive everything: each win clears the winning symbols, new ones roll in, and a multiplier trail above the reels climbs. Three wins in a row in the base game open a fifth row and 15 more paylines, taking the game to 50.
Editorial note: this guide explains how Jungle Jim and the Lost Sphinx works. Rules, features and payout figures are set by the studio and can differ between operators and game versions, so check the game’s information panel before you play. Slots are games of chance, and nothing here predicts results. Availability at Fortune Games can change.
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Jungle Jim and the Lost Sphinx: key facts
| Studio | Microgaming, developed with Stormcraft Studios |
|---|---|
| Reels and paylines | 5 reels, 4 rows, 35 paylines (the game screen in our lobby shows the 5x4 grid); 5 reels, 5 rows and 50 paylines once the grid expands |
| Maximum win | 6,250x stake (shown as “Win up to 6250x your bet” on a sign on the game screen in our lobby) |
| Top line payout | Jungle Jim: 10x stake for five on a payline (the paytable in our lobby shows £10.00 for five at a £1 bet, the highest figure among the eight symbols on that part of the page) |
| Rolling Reels | Winning symbols are removed and new symbols roll down, so one spin can bring a run of wins |
| Multiplier trail | Rises with each consecutive win; up to 10x in the base game (the game screen in our lobby shows the trail above the reels, marked 2x, 3x, 4x, 5x and 10x) |
| Grid expansion | Three consecutive base-game wins unlock a fifth row and 15 extra paylines |
| Second-chance respin | A free respin follows a roll that fails to win, keeping the run going |
| Free spins | 12 for three scatters, with a multiplier trail that reaches up to 20x |
| Golden Sphinx | Lands only on the centre reel during the free spins and moves the multiplier trail up |
| Win Booster | Microgaming’s name for a separate setting that adds an extra scatter, so that two scatters are enough for the free spins; this guide covers the standard game only |
| Autoplay and turbo | Not available at sites licensed in Great Britain; UK rules require at least 2.5 seconds between the start of one game cycle and the next |
| Stakes | UK rules cap online slot stakes at £5 a spin, or £2 if you are 18 to 24 |
| RTP | Shown in the game’s information panel |
| Series | Jungle Jim (compared below) |
All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time.
Part of the paytable in our lobby, at a £1 bet: five Jungle Jim symbols pay £10.00, five books £5.00, five chests £4.00 and five pots £2.50, and five matching gems pay £1.20 for the red or the orange and £1.00 for the green or the blue. Game and artwork © Microgaming, developed with Stormcraft Studios.
How Jungle Jim and the Lost Sphinx plays
The symbol set is a haul of relics. Four gemstones in red, orange, green and blue fill the low end, a pot and a treasure chest sit above them, and an ancient book is the highest paying of the regular treasure symbols. Jungle Jim himself is the highest-paying line symbol. The scatter is the way into the free spins, and the golden Sphinx only plays a part once those spins begin.
Jungle Jim and the Lost Sphinx in our lobby on 14 November 2026, at £1 a spin: 5 reels and 4 rows of gems, chests, books and Jungle Jim symbols, with a multiplier trail marked 2x, 3x, 4x, 5x and 10x above the reels and a sign to their left reading “Win up to 6250x your bet”. The bar above the game shows your net position, £0.00 here, and time played, which UK rules require for online slots. Game and artwork © Microgaming, developed with Stormcraft Studios.
Every win sets off Rolling Reels. The winning symbols disappear, fresh ones roll down into the gaps, and if they form another win the multiplier trail above the reels steps up again. A spin therefore keeps going for as long as the wins keep coming, and a single bet can produce a string of payouts that grow as the trail climbs.
The expanding grid and second-chance respin
The base game has its own goal: string three wins together. When the third consecutive win lands, the grid grows from four rows to five and 15 extra paylines switch on, so the next rolls play across 50 lines instead of 35. The game also gives the run some protection. If a roll fails to win, a free second-chance respin follows instead of the sequence ending at once, giving the winning streak another attempt to continue.
Free spins and the golden Sphinx
Three scatters award 12 free spins. The same Rolling Reels and multiplier trail carry on, but the trail’s ceiling doubles, from 10x in the base game to 20x. This is where the golden Sphinx comes in. It can only land on the centre reel, and each one that does moves the trail up a step, so the multiplier on later wins starts higher. Golden Sphinx symbols belong to this round alone, so the 12 spins carry a way to lift the trail that the base game lacks.
Jungle Jim and the Lost Sphinx compared with Jungle Jim El Dorado
Jungle Jim El Dorado introduced Jungle Jim in 2016 and set the formula this sequel builds on: Rolling Reels with a multiplier trail that rises in the free spins. The earlier game uses 25 paylines, its trail tops out at 5x in the base game and 15x in the free spins, and it gives 10 free spins. The Lost Sphinx raises each of those numbers and adds the expanding grid and the golden Sphinx.
| Game | Grid and lines | Multiplier trail (base game / free spins) |
|---|---|---|
| Jungle Jim El Dorado | 25 paylines | Up to 5x / up to 15x |
| Jungle Jim and the Lost Sphinx | 5x4, 35 paylines, rising to 5x5 and 50 | Up to 10x / up to 20x |
All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time.
Jungle Jim and the Lost Sphinx at Fortune Games
The Lost Sphinx is listed with the video slots in our lobby, for players aged 18 and over (18+), next to the other Jungle Jim adventures. The UK caps in the table apply to every player. There is no autoplay or turbo mode, as at every site licensed in Great Britain. Fortune Games has an app on the App Store and Google Play.
Frequently asked questions
Is Jungle Jim and the Lost Sphinx a fair, legitimate game?
It is a studio-made slot: Stormcraft Studios developed it exclusively for Microgaming, which released it with Rolling Reels and a Win Booster feature. Its rules, paytable and return figure are fixed by the studio and listed in the game’s information panel, and at sites licensed in Great Britain it runs under the Gambling Commission’s stake caps and game design rules.
What is Jungle Jim and the Lost Sphinx about?
It is the next chapter in Microgaming’s Jungle Jim series, a sequel to Jungle Jim El Dorado developed by Stormcraft Studios. The title points to its bonus symbol: golden Sphinx symbols appear on the centre reel in the free spins, while the base reels carry treasure such as an ancient book, a chest, a pot and four coloured gems.
How do you play Jungle Jim and the Lost Sphinx?
Choose a stake within the UK caps and spin. Each spin plays out across 35 lines, with wins clearing away and new symbols rolling in. The two things to watch for are three wins in a row, which open the fifth row and take the game to 50 lines, and three scatters, which start the 12 free spins and their higher multiplier ceiling.
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Checked on 15 November 2026 against Microgaming’s launch press release, the LCB and VegasSlotsOnline game records, Microgaming’s Jungle Jim El Dorado launch release, the casinos.com record for Jungle Jim El Dorado, the Gambling Commission’s stake-limit guidance and online games design rules, a Harris Hagan briefing and a CMS legal update on those rules, and the game in the Fortune Games lobby on 14 November 2026. Reviewed by Kay Cheadle on 15 November 2026. How we research and check our guides: our editorial policy.