> Source: https://sunken-city-riches.com/features/ > Independent guide to the Stakelogic slot *Sunken City Riches*. 18+ only. Last verified 2026-08-05. *Nine mechanics* # Sunken City Riches features explained **Sunken City Riches carries nine features: Payway Maker, Upgrade, Wild Multiplier, Split Symbols, Pick Bonus, Free Spins, Super Stake, Super Wheel and Spin to Win.** Three of them are Stakelogic network mechanics with published figures — Super Stake doubles your stake for an enhanced game state, Super Wheel hands you to a live 54-segment wheel with a 93% RTP and a 1-in-75 hit rate, and Spin to Win adds roughly +1% to the game's RTP. The other six are title-specific; their exact trigger numbers publish with the paytable on 29 September 2026. ## The engine: how three features combine Most slots list features that fire independently. Sunken City Riches is built so that three of them compound, and understanding that compounding is the difference between reading the feature list and understanding the game. **Payway Maker** adds symbol positions to reels. On a ways-pay grid, positions multiply: a 5×4 grid gives 4×4×4×4×4 = 1024 ways, but adding a single row to one reel takes it to 1280, and adding one to every reel takes it to 5⁵ = 3125. **Split Symbols** then multiplies again — a symbol splitting into four copies counts as four separate paths through that reel. **Wild Multiplier** applies a multiplier to whatever those expanded ways produce. Stack all three inside **Free Spins** and you have the only realistic route to the x15,000 ceiling. It also explains the 5/5 volatility rating: a game that pays this much when the stack aligns has to pay very little the rest of the time. ## Feature by feature ### Payway Maker Core Expands the number of active payways beyond the 1024 baseline by adding symbol positions to reels during play. On a ways-pay engine this compounds rather than adds — one extra row on one reel is worth 256 additional ways. *Confirmed:* the feature exists and is listed first on the roadmap. *Unpublished:* how it is triggered and how far it can expand. ### Split Symbols Core A symbol splits into two, three or four identical copies in the same position. Stakelogic runs this mechanic in its ClusterBreaker engine, where symbols split "into two, three or even four identical copies", and on a ways-pay grid each copy counts as another path. *Confirmed:* the mechanic and how it behaves in Stakelogic's engine. *Unpublished:* which symbols split in this title. ### Wild Multiplier Core Wilds substitute for paying symbols and carry a multiplier applied to any win they complete. Stakelogic's recent titles use sticky multiplier wilds that step up when wilds land on consecutive spins, with all visible multipliers tallied at the end of a sequence. *Unpublished:* the multiplier ceiling in this game. ### Upgrade Core A progression layer that promotes symbols to a higher tier or advances a collection ladder. The game's own framing is the map fragments and the ancient doors they unlock — collect, upgrade, open. Each step raises what the round can pay. ### Pick Bonus Bonus A player-choice round: select objects, reveal prizes, multipliers or a route into a further feature. Worth knowing — the distribution is fixed before you pick, so the choice is presentation rather than skill. That is true of every pick round in every licensed slot. ### Free Spins Bonus The main bonus, opened by scatters. On a 5/5 title with this stack, free spins are where the multipliers, splits and expanded payways are designed to accumulate — and the reason the base game runs cold between them. *Unpublished:* scatter count needed, number of spins awarded, retrigger rules. ### Super Stake Side bet Stakelogic's signature since 2019. **Doubles your stake** and enables a secondary game state — extra scatters, stacked wilds, or low-pay symbols removed, depending on the title. In The Expendables Megaways it adds 175 wilds to the reels and strips the low-pays. **It buys frequency, not edge.** A Mega Super Stake variant at x2.5 the base stake exists on some titles. ### Super Wheel Live layer An industry first: triggered on a random spin, it moves you to a **live studio** with a human host and a **54-segment money wheel**. Published network figures — **93% RTP**, hit rate about **1 in 75**. Three further live rounds sit behind it: Vegas Drops, Vegas Diamonds and Vegas Hold 'n' Spin, each with a guaranteed minimum return. ### Spin to Win Side bet The "STW" marked beside each RTP build on the roadmap. Switching it on adds approximately **+1% RTP**, taking the 96.00% build to about 97.00%. It is the only mechanic in the game that measurably improves your long-run return — which makes it the one worth reading the rules for. ## What is confirmed and what is not *Status of every feature claim on this page, as of 5 August 2026* | Claim | Status | Source | | --- | --- | --- | | Nine feature names | Confirmed | Stakelogic Q3 2026 network roadmap | | Super Stake doubles the stake | Confirmed | Stakelogic product material | | Super Wheel: 54 segments, 93% RTP, 1 in 75 | Confirmed | Stakelogic Super Wheel network launch | | Spin to Win adds ~1% RTP | Confirmed | Roadmap: "+1% STW" against each build | | Split Symbols behaviour (2–4 copies) | From engine | Stakelogic ClusterBreaker mechanic | | Trigger conditions, spin counts, multiplier caps | Not published | Publishes with the paytable on release | **Why we mark this out:** most pages about this game state trigger conditions and paytable values as fact today. Nothing of the sort has been published. We would rather tell you where the line is than fill the gap with invention — and we update this page the day the paytable goes live. ## The number that matters more than any feature Three certified RTP builds ship with this game. Your casino picks one, and the gap is two percentage points of everything you wager. [RTP & volatility guide](/rtp/) [How to play](/how-to-play/)