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Riddle Reels: A Case of Riches Online Slot Machine – Free Play & Review

Everyone loves a good mystery, or so the saying goes. Riddle Reels: A Case of Riches is testing that, and it gives us a crime mystery to solve, and maybe get paid through as well. With the usual excellent graphics that we’ve come to know Play n GO for, the game takes inspiration from Sherlock Holmes and 19th century Victorian London. At the same time, it features a classic setup with 3×3 reels.

As far as symbols are concerned, we see the detectives in the wild symbols, with additional versions coming in with multipliers. Regular symbols range from the high value positions that show us the four suspects, to the low paying crime weapons (pistols, daggers, tools and a noose).


Coming from Play n GO, we expect nothing but great graphics, and the features tend to match the look usually. It’s a developer that’s been around since the late 90s, so there are already two decades of history and experience there. It shows in most slot machines they release these days, typically with modern graphics and plenty of cool features to check out.

Basic Information

Play'n Go
Free Spins
Wild Symbol
Special Bonus Game
Online & Mobile
Riddle Reels: A Case of Riches screenshot 1
Riddle Reels: A Case of Riches screenshot 2

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How To Play It

You need to select the bet for the next round, and that’s pretty much it. A range of $0.10 to $100 is available for that purpose.

In exchange, the game will offer 3×3 reels, along with 9 active lines. Not a typical combo for a slot machine with 3 reels, but it works well and gives the player more chances to get paid. To get a win, you need three matching symbols on the same line (with a possible help from wild symbols).

Special Features

First, we have the wild symbols, easy to recognize since the image shown on them contains two characters, which look like they could be Sherlock Holmes and Dr Watson. A combo of three regular wilds will pay 12x the stake.

2x and 3x wild multipliers are also available, and they’re going to be used as boosters to the winning combinations that they contribute to. Up to 27x wild multipliers are possible, and if they form their own wins, then they pay as much as 324x the stake on each line.

The other major feature symbol, the scatter, can show up on all reels, and with 2 or 3 visible, there are two features that could trigger.

With only 2 scatters in view, the game gives you a Respin, where you are trying to land the 3rd symbol, in order to get to the free spins.

If that doesn’t happen, then it gives you a Mystery bonus instead. The reels with scatters will be entirely covered with mystery symbols that are transformed into a single regular icon, which may result in wins if the third reel has that icon at least once.

If you do get the 3 required scatters, either directly or through that Respin, you will trigger the free spins. It’s a complicated one, a board game inspired feature where you roll a dice and you advance on a board, getting clues along the way. Various modifiers and extra free spins can be obtained along the way.

Mega Spins can be obtained as well, by getting a meter charged, and for that one round a column will be entirely covered by wilds.

Maximum Payouts

As with a lot of other slots from this developer, wins of up to 5,000x the stake are a possibility inside. The slot has only Medium volatility, so I do like the payout potential. RTP will be 96.22% typically.


Riddle Reels: A Case of Riches is a fun-looking classic slot machine, which might use the original 3 reels, but it makes sure that its features are anything but typical for that category.

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