| RTP | 96.30% - Compare RTPs |
|---|---|
| Volatility | Medium |
| Reels | 5 |
| Paylines | 50 |
| Bet Range | £0.10 - £80.00 |
| Features | Wilds, Scatters |
Jungle Jim is back, and this time he's heading to Egypt. Jungle Jim and the Lost Sphinx is a high-volatility slot developed by Stormcraft Studios and published by Microgaming, released in 2019 as the sequel to the hugely popular Jungle Jim. Where the original dropped players into dense jungle territory, this follow-up trades the vines for sand dunes and ancient temples, while keeping the mechanics that made the first game so compelling.
The setting is the Valley of the Kings, and the visual treatment is solid - hieroglyphs, carved stonework, and golden artefacts fill the reels against an Egyptian dusk backdrop. It's not the most original theme in slot gaming, but Stormcraft have given it enough polish to feel distinct from the dozens of pharaoh-themed competitors on the market.
Reels, Paylines and Layout
The game opens on a 5x4 grid with 35 active paylines. That layout expands to 5x5 with 50 paylines once the Rolling Reels multiplier climbs to level three - so the game literally grows as you build a winning streak. Bets range from 0.10 to 80.00 per spin, and the RTP sits at 96.3%, which is above average for a high-volatility release. The maximum win potential is 6,250x your stake.
Rolling Reels and Multipliers
The core mechanic here is Rolling Reels, which works as a cascading system. When a winning combination lands, those symbols disappear and new ones fall into place, giving you another chance to hit a win from the same spin. Each consecutive cascade steps up a multiplier through five levels: 1x, 2x, 3x, 4x, 5x, and then a jump to 10x at the top.
The reel expansion kicks in automatically at level three, widening the grid and adding 15 more paylines while you're on a run. It's a clever bit of design - the game rewards you for sustaining a cascade chain by giving you more ways to keep it going.
There's also a Second Chance Respin that triggers if the third cascade in a chain produces no winning symbols. Rather than the chain ending abruptly, you get one respin to try and extend it. It doesn't activate on demand, only after the third fruitless cascade, but it takes some of the sting out of a near-miss chain.
Free Spins
Landing three or more Sphinx scatter symbols triggers the free spins round, awarding 12 spins. The feature plays out on the fully expanded 5x5 reel set from the start, so you go straight into the wider layout without needing to build up the multiplier first.
The Rolling Reels multiplier progression is also enhanced during free spins, reaching higher levels than in the base game: 2x, 3x, 4x, 8x, 12x, and 20x at the peak. Landing the Sphinx symbol on the centre reel during a spin awards additional cascade attempts, helping to push chains further.
The feature isn't re-triggerable in the traditional sense, but the Sphinx symbol actively extends individual rolling chains rather than awarding bonus spins on top. Given the 20x multiplier ceiling and the expanded grid, this is where the big wins are generated.
Win Booster
There's an optional Win Booster feature that costs four times the standard stake. With it active, the free spins round can be triggered by just two scatter symbols instead of three. The boosted mode also adjusts the maximum win potential upward, to around 1,560x from two-scatter triggers. Whether it's worth the additional cost depends on how you weigh hit frequency against stake size - it's worth being aware of as an option rather than a default.
How It Compares to the Original
The original Jungle Jim introduced the Rolling Reels format to the franchise and built a strong following on the back of it. The Lost Sphinx keeps that foundation but adds the expanding grid and the enhanced free spins multiplier progression, which meaningfully raises the ceiling. The Egyptian setting also allows for a different visual language - it's a cleaner, more structured aesthetic than the jungle original.
If you enjoyed the first game, this sequel doesn't reinvent things but does improve on them in the areas that matter most to high-variance players: the multiplier range and the max win potential.
Verdict
Jungle Jim and the Lost Sphinx is a well-constructed high-volatility slot with a genuine mechanic at its centre. The Rolling Reels cascade system combined with an expanding grid and escalating multipliers gives the game real momentum when things are going well. The 96.3% RTP is strong for the genre, and the 6,250x max win ceiling gives it enough upside to satisfy players chasing bigger returns. The Egyptian theme won't surprise anyone, but the execution is clean and the features are well integrated. Worth a session if you're comfortable with the variance.
Jungle Jim and the Lost Sphinx - FAQs
Who developed Jungle Jim and the Lost Sphinx?
Jungle Jim and the Lost Sphinx was developed by Stormcraft Studios and published by Microgaming. It was released in 2019 as a sequel to the original Jungle Jim slot.
What is the RTP of Jungle Jim and the Lost Sphinx?
The RTP (Return to Player) is 96.3%, which is above average for a high-volatility slot.
How does the Rolling Reels feature work?
Rolling Reels is a cascading mechanic where winning symbols are removed and replaced by new ones falling into place. Each consecutive cascade steps up a multiplier through six levels: 1x, 2x, 3x, 4x, 5x, and 10x at the top. The reels also expand from a 5x4 grid to a 5x5 grid at multiplier level three.
How do you trigger the free spins in Jungle Jim and the Lost Sphinx?
Land three or more Sphinx scatter symbols to trigger 12 free spins. The feature plays on the fully expanded 5x5 reel set with an enhanced multiplier progression reaching up to 20x.
What is the maximum win in Jungle Jim and the Lost Sphinx?
The maximum win is 6,250x your stake, achieved through the Rolling Reels cascade system combined with the high multipliers available during the free spins feature.
Is Jungle Jim and the Lost Sphinx a sequel?
Yes, it is the sequel to the original Jungle Jim slot, also developed by Stormcraft Studios for Microgaming. While the original was set in a jungle environment, the sequel moves to an Egyptian theme in the Valley of the Kings.
Where to Play Jungle Jim And The Lost Sphinx
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Jungle Jim And The Lost Sphinx RTP and Variance
Jungle Jim And The Lost Sphinx has an RTP of 96.30%, which is above average. See our highest RTP slots for the best returning games. Medium volatility offers a balanced mix of win frequency and payout size.
At the minimum bet of £0.10 per spin, a £10 deposit gives you 100 spins with a statistical expected return of £9.63. Read our slot betting strategy guide for tips on managing your bankroll.