Riddle Reels: A Case of Riches

Play'n GO set Riddle Reels: A Case of Riches in a shadowy corner of Victorian London, casting players as a detective working a case alongside a cast of period suspects and weapons rather than putting Sherlock Holmes himself on the reels.

The base grid is a compact 3x3 layout with 9 fixed paylines. Low-value symbols are drawn from a set of crime-scene weapons - a strangling cord, a blunt tool, a blade and a firearm among them - worth 0.4x to 1x the stake, while four suspect characters pay the higher amounts, from 2x up to 12x for a full line. Three wild symbols are in play: a standard wild worth up to 12x on its own, plus x2 and x3 multiplier wilds that combine their values when more than one lands together, up to a maximum of x27 - a line of the x3 version alone is worth 324x the stake.

Two smaller features run off the scatter symbol before the main bonus even triggers. If scatters land on exactly two reels, a Respin kicks in: those two reels lock while the third spins again, hunting for a third scatter to complete the trigger. When that respin comes up short, the Mystery feature activates instead, duplicating each locked scatter across its full reel to reveal a matching suspect or weapon symbol.

Landing three scatters anywhere opens the Free Spins feature proper, built around a 14-space clue board. Players start with one clue already in hand and pick up four more by rolling a die four times, moving 1 to 6 spaces around the board each time; every space lands on 1 to 3 free spins plus one of four spin types - reels that convert to a single weapon, reels that convert to a single suspect, a guaranteed wild reel, or nothing at all. Completing a clue, which needs one, two or four winning spins depending on the space, feeds a Clue Point Wheel meter. If that meter is fully charged once all four dice rolls are used, players earn a Mega Spin: one free spin where an entire reel is covered by a wild (occasionally one of the multiplier versions), with the remaining two reels filled by suspect and weapon icons, after which the whole bonus retriggers from the start. If the meter isn't charged in time, the Clue Point Wheel spins on its own instead, and landing in the charged zone still awards the Mega Spin.

RTP on Riddle Reels: A Case of Riches defaults to 96.22%, with four lower configurations available down to 84.47% depending on setup, and volatility is a medium 5 out of 10. The maximum win is 5,000x the stake across a 0.10 to 100 betting range. Between the two pre-bonus scatter features and a clue board that can retrigger itself indefinitely through Mega Spins, most of the game's depth lies in how far a single free spins run can be strung out.