Quick verdict: Mystery Joker is a medium-volatility Play’n GO fruit slot from September 2014, with 3 reels, 3 rows and 5 paylines. Its RTP is listed at 96.98%, and its free spins pay a mystery prize of 1x to 100x your bet whenever two or more Joker Hats land.
Demo tested on mobile by Jason Thompson on 10 October 2026: it loaded and worked.
Where we play Mystery Joker
1win is our top-rated casino (9.9/10), with thousands of slots and a crypto withdrawal that took 15 minutes in our test.
Play at 1win18+. T&Cs apply. Not available in every country. Game libraries vary, so search the lobby for Mystery Joker.
Mystery Joker at a glance
| Provider | Play’n GO |
|---|---|
| Released | September 2014 |
| Layout | 3 reels, 3 rows, 5 paylines |
| RTP | 96.98% (lower versions are listed by some sites) |
| Volatility | Medium |
| Bet per spin | 0.10 to 100 |
| Max win | 6,020x (SlotCatalog, SiGMA) or 5,000x (Cointelegraph) |
| Scatter | Joker Hat |
| Free spins | 10 from 3 Joker Hats, up to 50 in total |
| Mystery prize | 1x to 100x your bet in free spins |
| Mobile | Yes |
How do the Mystery Joker free spins work?
Three Joker Hat scatters anywhere award 10 free spins. Three more hats during the round add another 10, up to a maximum of 50 free spins. Whenever two or more hats land in the free spins, you also win a random mystery prize worth 1x to 100x your total bet.
What do the symbols pay?
It is a traditional fruit machine layout. The star is the top symbol, followed by the bell and the grapes, while the lemon and cherries pay the least. With only 5 lines, wins are easy to read on screen.
Is Mystery Joker worth playing?
It suits players who want a simple classic with a proper bonus, which many 3-reel games lack. Medium volatility keeps the swings moderate. The RTP needs checking, though: most sources list 96.98%, but SlotCatalog lists 93.99%, which suggests casinos can run different versions.
Mystery Joker vs Mystery Joker 6000
The 2017 follow-up, Mystery Joker 6000, keeps the 3-reel, 5-line fruit format but drops the free spins. Instead, two jokers on a line respin reel 3, and a third joker starts a Mystery Wheel. If you want free spins and the 1x to 100x mystery prizes, the original is the one to open.
Tips for playing Mystery Joker
- In free spins, every landing of 2 or more hats pays a mystery prize, so hats matter even when they do not retrigger.
- Retriggers can stretch the round to 50 spins, five times the starting 10.
- The info screen shows the RTP; look for 96.98%, as lower versions exist.
- It plays fast on a phone because there are only 9 positions and 5 lines.
Slots like Mystery Joker
- Fire Joker: Play’n GO’s 3×3 joker classic with respins (our full review).
- Fire Joker Freeze: the icy follow-up with a x20 wheel.
- Joker’s Jewels: a joker-themed classic from Pragmatic Play.
- Ultra Hold and Spin: a 3×3 classic with coin respins.
Where to play Mystery Joker
Look among Play’n GO slots and pick the original rather than Mystery Joker 6000, which has no free spins. 1win is our top-rated casino at 9.9/10 and paid our crypto withdrawal in 15 minutes in June 2026. New players can use promo code Ultragambler (see our 1win promo code page).
Mystery Joker FAQs
What is the RTP of Mystery Joker?
96.98%, according to SiGMA, Cointelegraph and SlotsTemple. SlotCatalog lists 93.99%, so check the info screen.
What is the max win in Mystery Joker?
SlotCatalog and SiGMA list 6,020x your stake; Cointelegraph says 5,000x.
How many free spins can you win in Mystery Joker?
10 from 3 Joker Hats, plus 10 more each time 3 hats land again, up to 50 free spins.
What is the Mystery Joker mystery prize?
During free spins, 2 or more Joker Hats award a random prize of 1x to 100x your total bet.
Can I play Mystery Joker for free?
Yes. The demo at the top of this page plays with free credits; it loaded when we tested it on 10 October 2026.
How we checked this
- September 2014 release, 3×3 with 5 lines, medium volatility and 0.10 to 100 bets: Play’n GO, SlotCatalog, SiGMA and Cointelegraph.
- RTP: 96.98% from SiGMA, Cointelegraph and SlotsTemple; 93.99% from SlotCatalog. Max win: 6,020x from SlotCatalog and SiGMA; 5,000x from Cointelegraph.
- Free spins, retriggers up to 50, the mystery prize and the symbol order: SlotCatalog, SiGMA, Cointelegraph and SlotsTemple.
- Mystery Joker 6000: SlotCatalog and European Gaming.
- Figures last checked: 10 October 2026.
Important: check your local laws before you play
Online gambling laws differ from country to country, and in some places it is restricted or not permitted at all. Check that online gambling is legal where you live and that the casino accepts players from your country. You must be 18 or older (or the legal gambling age in your country, if higher). Only gamble with money you can afford to lose.
