Dark King: Forbidden Riches is a 5-reel, 3-row video slot from NetEnt released in October 2020. The game delivers a gothic fantasy atmosphere built around a cursed king's vault, featuring 20 fixed paylines, medium volatility and a published RTP of 96.06%. Its headline mechanics are a stacking Wild Multiplier up to x5 and a Free Spins round with Sticky Wild Hotspots arranged in a cross on the three middle reels.
The maximum payout reaches 1,600x the stake, and bets range from R0.20 up to R400 per spin. With a 38% hit frequency, the game balances steady base-game action against a concentrated bonus round where multipliers and sticky symbols carry most of the variance.
Gameplay, Reels and Betting Range
The game runs on a standard 5×3 layout with 20 fixed paylines, which means the structure is identical on every spin and there is no need to activate lines manually. Wins pay left to right from the leftmost reel, and only the highest combination per line counts toward the total.
The bet range is notably wide — from R0.20 to R400 per spin — which fits both low-stake sessions and high-roller play. At the reference R1 stake, line wins scale linearly with the bet, and the maximum cap of 1,600x the stake applies to any single round including free spins.
The interface keeps the controls minimal: a central spin button, autoplay and skip options, plus bet adjustment through the coin icon. The dark cathedral-style frame with two armored kings flanking the reels sets the tone, and a row of four glowing skulls under the reels acts as the visual anchor for the multiplier meter that activates during free spins.
Symbols and Paytable
The paytable combines ten regular symbols with one Wild and one Scatter. The top of the table is shared by the Wild orb and the Dark King mask, both paying R25 for five on a line at a R1 bet. The royal card symbols (A, K, Q, J, 10) fill the lower tier, while four themed character symbols — dragon, iron knight, green lantern knight and grim reaper — sit in the middle.
Payouts per line at the reference R1 stake are listed below.
| Symbol | 3 of a kind | 4 of a kind | 5 of a kind |
|---|---|---|---|
| Wild (blue orb) | R1.00 | R7.50 | R25.00 |
| Dark King (purple mask) | R1.00 | R7.50 | R25.00 |
| Red Dragon | R1.00 | R6.25 | R20.00 |
| Iron Knight | R1.00 | R5.00 | R17.50 |
| Green Lantern Knight | R1.00 | R3.75 | R15.00 |
| Grim Reaper | R1.00 | R3.00 | R12.50 |
| A | R0.25 | R1.00 | R5.00 |
| K | R0.25 | R1.00 | R4.00 |
| Q | R0.25 | R1.00 | R3.50 |
| J | R0.25 | R1.00 | R3.00 |
| 10 | R0.25 | R1.00 | R2.50 |
The Scatter is the red shield with the golden crowned skull. It does not appear in the paytable because it pays via Free Spins activation rather than line wins.
Wild Multiplier Feature
The Wild mechanic is the main engine of the base game. Any Wild orb that lands anywhere on the reels substitutes for every regular symbol except the Scatter, which already opens two routes to a payout: completing line combinations and, at the same time, multiplying every line win by the number of Wilds currently on the grid.
The multiplier scale is linear: one Wild equals x1, two Wilds equal x2, three Wilds equal x3, four Wilds equal x4 and five Wilds equal x5. This is why Wild clusters produce the most dramatic base-game spins — a single Wild does nothing to the multiplier, but a three-Wild spin triples the entire line-win total. Because the Wild itself is tied with the Dark King for the top symbol value, multi-Wild spins combine line completion with multiplication in the same event.
The multiplier meter under the reels lights up the x2, x3, x4 or x5 skull slot depending on how many Wilds are in view, so the current multiplier is always visible before the reels resolve. Outside of a Wild-heavy spin, payouts are computed at base value, which keeps the hit frequency at 38% but holds back the bigger swings for feature spins.
Free Spins, Sticky Wild Hotspots and Extra Spins
Three or more Scatter symbols anywhere on the reels trigger the Free Spins mode. The count scales with the number of Scatters: three Scatters give 10 Free Spins, four Scatters give 12, and five Scatters award 15. The feature plays at the triggering bet and cannot be bought — there is no Bonus Buy or Ante Bet option in this slot.
The Free Spins round introduces two extra layers on top of the base mechanic. First, a fixed area of 5 positions arranged in a cross shape is placed on reels 2, 3 and 4. This area is called the Sticky Wild Hotspots zone, and it is the only part of the grid where Wilds behave differently. Second, any Wild that lands on one of these five hotspot cells transforms into a Sticky Wild, stays locked there until the end of the round, and rewards the player with one Extra Free Spin.
The Extra Free Spin award is capped at 5 per session, which means a round can be extended from 10 up to 15 spins (or from 15 up to 20 if started with five Scatters). The Wild Multiplier logic from the base game carries over and now counts both regular Wilds and Sticky Wilds together, also from x1 up to x5. As sticky symbols accumulate on the cross, subsequent spins can start with a pre-built multiplier of x2 or x3 before any fresh Wild even lands.
Players who want to get familiar with timing, bet levels and how the bonus snowballs often run a Dark King: Forbidden Riches demo session first — the demo behaves identically to the real-money version and is a practical way to see how the hotspot zone converts before committing to a bankroll.
Paylines and Winning Structure
The game uses 20 fixed paylines, and both their number and their shape cannot be changed. They cover all three rows across the five reels with zig-zag, V-shape and straight-row patterns, which is the standard NetEnt configuration for video slots of this era.
Line wins pay only when matching symbols appear in succession from the leftmost reel going right, and only the single highest win per line is counted even if two lower combinations overlap on the same row. All scatter triggers are evaluated independently of lines, which is why Free Spins can activate even on spins that also produce regular line payouts.
Visual Design, Interface and Mobile Play
The theme leans heavily into dark-fantasy imagery: a ruined throne room, armored undead kings, candles, gargoyles and a soundtrack that stays subdued until the bonus round kicks in. Character art is rendered with the high level of polish typical of NetEnt's post-2020 releases, and animations trigger only on winning lines and feature events, which keeps idle spins clean.
The slot runs in portrait and landscape modes on mobile and does not lose functionality on smaller screens — bet adjustment, autoplay, turbo spin and the paytable are all reachable from the main view. For players who want to preview the atmosphere and mechanics without a deposit, the Dark King: Forbidden Riches demo is widely available across NetEnt-licensed operators and loads in the browser without registration on most platforms.
Structural Probability & Grid Dynamics
In a classic 5×3 layout with 20 fixed paylines, the evaluation geometry is identical on every spin. That means the slot cannot use reel expansion, grid growth or cascading respins to generate variance — the entire structural weight of RTP sits in two places: the Wild Multiplier scaling system and the Free Spins hotspot logic.
The main driver of the base game is the dual function of the Wild symbol. Because the Wild is tied with the Dark King as the top-paying icon at 25x per line, every Wild that lands on the screen performs two economic jobs at once: it contributes to line completion and it multiplies all line wins by the current Wild count. Spins with three or more Wilds compound these effects in the same round, which is where most of the base-game volatility is concentrated.
Free Spins shift the math from frequency to geometry. The Sticky Wild Hotspots form a fixed cross of 5 cells on the middle three reels — out of the 9 central-grid positions (3 rows × 3 middle reels), roughly 55.6% are hotspot-active. Whether a round snowballs or stalls depends on how many Wilds actually land inside this zone, not simply on how many appear on the grid. The self-extending cap of 5 Extra Free Spins and the x5 multiplier ceiling together explain why the maximum payout sits at a medium-volatility 1,600x rather than a high-variance 5,000x or more.
The absence of Bonus Buy and Ante Bet means the player's only route into the bonus is scatter accumulation in the base game. This structural choice keeps RTP distribution naturally weighted toward normal spins, which is consistent with the 38% hit frequency.
| Metric | Structural Value | Mathematical Impact |
|---|---|---|
| Grid & paylines | 5×3, 20 fixed lines | Fixed evaluation geometry; no reel expansion or cascades |
| Wild Multiplier scale | x1 to x5, linear | Multiplicative layer on line wins, tied to on-screen Wild count |
| Sticky Wild Hotspot coverage (Custom) | 5 of 9 middle-reel cells ≈ 55.6% | High-coverage cross defines free-spin snowball potential |
| Bonus Buy availability | None | RTP stays weighted to base spins; scatter is the only bonus route |