

| Slot | Provider | RTP | Volatility | Max win | Key mechanic | Match |
|---|---|---|---|---|---|---|
| Extra Chilli | Big Time Gaming | 96.19% | Megaways + cascading reels | 9/10 | ||
| Gold Megaways | Big Time Gaming | 96.42% | Megaways | 8/10 | ||
| Bison Rising Megaways | Blueprint Gaming | 96.50% | 50,000x | Megaways | 7/10 | |
| Diamond Mine Megaways | Blueprint Gaming | 96.43% | Megaways | 7/10 | ||
| Rick and Morty Megaways | Blueprint Gaming | 96.55% | 50,000x | Megaways | 7/10 | |
| White Rabbit Megaways | Big Time Gaming | 97.24%–97.77% | 13,000x | Megaways | 7/10 | |
| Piggy Riches Megaways | NetEnt | 95.71% | 10,474.5x | Megaways | 6/10 | |
| 5 Lions Megaways | Pragmatic Play | 96.50% | Megaways | 6/10 |
Why each fits




These slots run at UK Gambling Commission licensed operators. RTP can vary by operator, because studios ship several RTP builds and the casino chooses which to run, so check the in-game paytable at your chosen site. Links are affiliate links; it costs you nothing and never changes our ranking.
Players who enjoy high-volatility Megaways slots built on a television IP have found a specific niche in Big Time Gaming's catalogue. Games like Who Wants to be a Millionaire Megaways are defined by three load-bearing specs: a variable-reel Megaways engine delivering up to 117,649 ways to win, high volatility, and a 20,000x max-win ceiling that justifies the risk. Every alternative on this page was filtered to match at least two of those dimensions: the Megaways mechanic, the high-volatility band, and a comparable max-win range.
Players who prefer short, frequent wins in lower-variance games will find a different category more suitable. This list is for those who understand that the 20,000x ceiling only matters if the volatility is high enough to reach it.
Extra Chilli shares a publisher with Who Wants to be a Millionaire Megaways, and the design DNA shows. Big Time Gaming built both titles on the Megaways engine, delivering up to 117,649 ways to win on a six-reel grid, and both carry high volatility ratings. The RTP of 96.19% sits close to the 96.32% posted by the head game, so players switching between the two will find the theoretical return barely shifts.
The mechanic addition is cascading reels: the game stacks this on top of the Megaways structure, meaning winning combinations clear and new symbols fall into place within the same spin sequence. Players who found the variable-reel tension of Who Wants to be a Millionaire Megaways engaging will encounter the same engine here, with the cascade extending rather than replacing that core mechanic.
Gold Megaways is a Big Time Gaming title, which means players familiar with Who Wants to be a Millionaire Megaways are already in familiar structural territory. The Megaways engine runs on a six-reel, all-ways grid, and the RTP of 96.42% sits almost exactly level with the head game's 96.32%, so the theoretical return barely changes for players moving between the two.
The theme replaces the television quiz-show framing with a gold-and-wealth aesthetic, but the mechanical foundation is consistent. Players who found the variable-reel engine in Who Wants to be a Millionaire Megaways engaging will encounter the same structure here, from the same developer, at a near-matching return rate.
Bison Rising Megaways from Blueprint Gaming carries the same two identifiers that define Who Wants to be a Millionaire Megaways: the Megaways mechanic and high volatility. The RTP of 96.50% is near-identical to the head game's 96.32%, placing both titles in the same theoretical return band.
The practical divergence is the max-win ceiling, which reaches 50,000x on this title against the 20,000x cap on the head game. Players who want the Megaways variable-reel experience from a different studio will find Blueprint Gaming's treatment comparable in volatility feel, but the higher ceiling means the reward distribution skews further toward the right tail. Sessions can run drier before a significant hit, which is a trade-off worth understanding before choosing this over the subject.
Diamond Mine Megaways from Blueprint Gaming checks the two mechanical boxes that matter most for comparison to Who Wants to be a Millionaire Megaways: the Megaways engine runs on a six-reel grid, and the volatility is confirmed high. The RTP of 96.43% is an almost matching figure to the head game's 96.32%, so the theoretical return holds steady for players moving between the two titles.
The theme is a clean departure, replacing the quiz-show tension with a mining and gem aesthetic. Players who chose Who Wants to be a Millionaire Megaways primarily for its mechanical profile rather than its television branding will find Diamond Mine Megaways a structurally comparable option from a different provider, at a near-identical return rate.
Rick and Morty Megaways from Blueprint Gaming shares two dimensions with Who Wants to be a Millionaire Megaways that go beyond pure mechanics: both are licensed television properties adapted into Megaways slots, and both carry high volatility with near-identical RTPs. The Blueprint title posts 96.55% against the head game's 96.32%. The theme-adjacency is genuine, and players who chose the head game partly for its quiz-show brand will find the same IP-adaptation logic here, applied to a sci-fi animated setting.
The structural difference is the reel count: this title runs on five reels, not the six that drive Who Wants to be a Millionaire Megaways. The max-win ceiling also separates them, with the Blueprint slot reaching 50,000x against the head game's 20,000x cap.
White Rabbit Megaways is also from Big Time Gaming, sharing the same studio DNA as Who Wants to be a Millionaire Megaways. The Megaways engine here reaches up to 248,832 ways to win, higher than the 117,649 available in the head game. The RTP runs from 97.24% on default mode to 97.77% when the Feature Drop is purchased at full price, the highest confirmed figure across this entire comparison.
The volatility is the key differentiator: this title sits at medium-high rather than the high rating of the head game. For players who found Who Wants to be a Millionaire Megaways intense across dry stretches, White Rabbit Megaways offers the same BTG Megaways engineering with a moderated risk profile. The max-win ceiling is 13,000x, below the head game's 20,000x cap.
Piggy Riches Megaways from NetEnt runs the same 117,649-ways Megaways engine as Who Wants to be a Millionaire Megaways and carries matching high volatility, so the mechanical rhythm of variable-reel spins is consistent across both titles. The RTP of 95.71% sits below the head game's 96.32%, a meaningful consideration for players tracking theoretical return over longer sessions.
The max-win ceiling also diverges: at 10,474.5x, this is a more bounded title than the head game's 20,000x cap. Players who want the Megaways variability without the wider prize distribution of Who Wants to be a Millionaire Megaways may find that ceiling a reasonable trade-off; players chasing the higher prize potential should note it is not available here.
5 Lions Megaways from Pragmatic Play shares the Megaways engine, high volatility, and six-reel grid with Who Wants to be a Millionaire Megaways, and its RTP of 96.50% is comparable to the head game's 96.32%. Players who want a Megaways title with a similar technical specification from a different studio will find the return profile consistent.
The bonus structure offers distinct choices, with a free-spins round triggered by bonus symbols and wild features active in the base game. These mechanics give 5 Lions Megaways a different feel in regular play compared to the quiz-show format of Who Wants to be a Millionaire Megaways. The Eastern theme is a clear departure from the television IP of the head game.
Slots like Who Wants to be a Millionaire Megaways cluster around the Megaways mechanic, and that shared foundation shapes how the comparison works. Seven of the eight titles here run the variable-reel Megaways engine; Extra Chilli adds cascading reels on top of that structure. The meaningful differences emerge on three axes: max-win ceiling, provider heritage, and volatility band.
On max-win, the field splits between titles that sit below the head game's 20,000x cap, including White Rabbit Megaways at 13,000x and Piggy Riches Megaways at 10,474.5x, and those that push considerably higher, with Bison Rising Megaways and Rick and Morty Megaways both reaching 50,000x. On volatility, all but one title is rated high; White Rabbit Megaways steps down to medium-high. On provider, Big Time Gaming's own catalogue carries the same design philosophy as the head game, while Blueprint Gaming and Pragmatic Play deliver Megaways under different bonus structures.
For players narrowing this list of games like Who Wants to be a Millionaire Megaways to a single next session, the decision splits on three variables: provider preference, max-win ambition, and volatility tolerance.
Players who want to stay within the Big Time Gaming catalogue will find Extra Chilli the closest structural match, sharing the same 117,649-ways Megaways engine and high volatility at an RTP of 96.19%. Gold Megaways is the other BTG option at 96.42% RTP. Players whose priority is a higher max-win ceiling have two options: Bison Rising Megaways and Rick and Morty Megaways, both capped at 50,000x. Where RTP matters most, White Rabbit Megaways publishes the highest figure in this comparison at 97.24% on default mode, though its volatility is medium-high rather than high. Piggy Riches Megaways suits players who want the 117,649-ways Megaways engine with a defined 10,474.5x max-win ceiling. Diamond Mine Megaways and 5 Lions Megaways round out the list for players seeking proven Megaways titles at comparable RTP levels from different studios.
Finding a casino game like Who Wants to be a Millionaire Megaways starts with the mechanic: Megaways is the qualifying filter, because the variable-reel structure is the core experience players are trying to replicate. From there, volatility locks the risk profile: every title on this list is rated high or medium-high. RTP is drawn from published provider or verified third-party figures, not estimated values. Max-win ceiling is the final dimension, anchoring the theoretical upside of a session against the head game's 20,000x cap.
Titles that satisfied all four filters were included. Titles with unconfirmed or contested figures on any dimension were excluded. No alternative earns a place on the basis of theme or branding alone: the mechanical and statistical case has to hold independently.
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