

| Slot | Provider | RTP | Volatility | Max win | Key mechanic | Match |
|---|---|---|---|---|---|---|
| Moon Princess 100 | Play'n GO | 96.2% | x15000.00 | Cluster Pays | 9/10 | |
| Book of Dead | Play'n GO | 96.21% | Expanding wilds in free spins | 6/10 | ||
| Book of Dead GO Collect | Play'n GO | 96.2% | 10,000x | Expanding specials plus GO Collect | 6/10 | |
| Game of Thrones | Blueprint Gaming | 94% | 17,000x | 4,096 ways to win, 6x6 grid | 4/10 | |
| Into The Wild Megaways | Blueprint Gaming | 96.09% | Megaways | 4/10 | ||
| Bloodmoon Amazonia | Live22 | 97% | Bonus buy | 4/10 | ||
| Medusa's Mystic Reels Megaways | Playzia | 94% | Megaways | 4/10 | ||
| Avalon | Games Global | 96.01% | 1,400x | Standard wilds and scatters | 3/10 |
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.
Moon Princess draws players into a loop built around cascading drops: winning symbols clear, replacements fall, and each drop multiplies the prize further through an escalating multiplier. At very high volatility and a 5,000x potential maximum win, the game rewards patience for long cold stretches with the prospect of meaningful multiplier chains. Players who enjoy this structure tend to search for games like Moon Princess once they understand what specifically makes it tick: not the moon theme or the animation style, but the compounding drop logic and the rare-but-significant payout shape that very high volatility produces.
Moon Princess 100 is Play'n GO's sequel entry in the same franchise, carrying the Moon and Nature themes into a larger format. Its Cluster Pays mechanic, paired with the Girl Power feature, the Princess Trinity feature, and free spins, replaces the original's cascading column drops with a cluster-formation win system, a structural shift that changes session pacing while keeping the same aesthetic world.
The RTP is 96.2%, the volatility is rated High, and the maximum win reaches 15,000x. That max win ceiling is a significant raise from Moon Princess's 5,000x, giving players who want to stay inside this franchise a higher prize potential at the cost of a slightly lower RTP and a slightly lower volatility band.
Book of Dead is one of Play'n GO's flagship high-volatility releases, built on an Egyptian adventure theme. The core bonus mechanic is expanding wilds in the free spins feature: a designated special symbol expands to fill an entire reel whenever it lands during the bonus round, concentrating payout potential into single-symbol coverage runs across the grid.
The RTP sits at 96.21% and the volatility is rated High, placing Book of Dead in a similar RTP band to Moon Princess with a directionally matching volatility profile. Players who enjoy Moon Princess's high-stakes session rhythm but want a different bonus trigger format and a completely different theme will find Book of Dead the natural first alternative to explore from the same studio.
Book of Dead GO Collect is Play'n GO's expanded take on the original, adding the GO Collect and Treasure Vault features on top of the classic free spins round with expanding special symbols. The GO Collect mechanic introduces a collector symbol layer that accumulates values from matching symbols during a spin, creating a second win path alongside the existing free-spin bonus structure.
The RTP is 96.2%, the volatility is medium-high, and the max win is 10,000x, above Moon Princess's 5,000x ceiling. Players looking to stay on the Play'n GO engine with a higher prize target will find the 10,000x max win the primary argument here, though the medium-high volatility marks a step down from Moon Princess's very high volatility profile.
Game of Thrones from Blueprint Gaming is a licensed IP slot with 4,096 ways to win, a layout quite different from Moon Princess's 5-reel fixed-payline cascade structure. Winning combinations form across adjacent reels from left to right rather than through a drop mechanic, and the game carries the licensed IP's established visual identity throughout.
The RTP is 94%, the volatility is rated High, and the max win is 17,000x, the highest in this comparison set and well above Moon Princess's 5,000x. Players who prioritise volatility direction and maximum prize potential over mechanic similarity or RTP will find Game of Thrones the most relevant alternative here, accepting the lower theoretical return as the cost of the higher ceiling.
Into The Wild Megaways from Blueprint Gaming uses the Megaways reel engine to vary the number of active ways per spin, producing a fluctuating reel structure that differs from Moon Princess's fixed 5-reel grid. The nature theme connects it to Moon Princess's Nature tag, and the RTP of 96.09% sits close to Moon Princess's 96.5%.
Volatility is rated 4 by the provider. Players who want a nature-themed slot with a near-matching RTP but a different mechanical approach will find the Megaways engine here delivers a distinct feel: symbol counts shift each spin rather than triggering through cascading drops with escalating multipliers, and the studio is Blueprint rather than Play'n GO.
Bloodmoon Amazonia from Live22 shares both the Moon and Nature theme tags with Moon Princess, making it the only alternative in this set that matches on both theme dimensions simultaneously. The game features a bonus buy mechanic, allowing players to purchase access to the bonus round directly rather than waiting for it to trigger organically through base-game play.
The RTP is 97%, which sits above Moon Princess's 96.5%, and volatility is rated 3 by the provider. Maximum win data is not available in our verified sources for this page. Players drawn by the Moon and Nature combination will find Bloodmoon Amazonia the closest thematic match in this set, though the bonus buy focus, a different provider, and the absence of a cascade structure make the session feel distinct from Moon Princess.
Medusa's Mystic Reels Megaways from Playzia is a goddess and fantasy-themed slot running on the Megaways engine across 6 reels. The Goddess and Fantasy theme tags create tonal adjacency to Moon Princess's supernatural female-character world, even though the two games come from different providers and use structurally different reel mechanics.
The RTP is 94% and volatility is rated 5 by the provider. Players drawn to Moon Princess's character-driven aesthetic who also want Megaways reel dynamics will find Medusa's Mystic Reels Megaways the closest thematic neighbour in that direction, though the lower RTP is a meaningful trade-off against Moon Princess's 96.5% and the Megaways engine delivers a different structural feel.
Avalon from Games Global is a classic slot built around standard wild and scatter symbols, with payouts achieved through conventional winning combinations rather than any cascade or cluster mechanic. The max win is 1,400x, achievable through the free spin bonus round's multiplier, and the volatility is rated medium.
The RTP of 96.01% places Avalon in the nearest RTP range to Moon Princess's 96.5% among the alternatives on this page. Players who want a comparable theoretical return but prefer a medium-volatility session with a more modest and achievable max win target will find Avalon the natural step-down option, accepting the significant differences in session shape and prize ceiling as the cost of a calmer experience.
Comparing slots like Moon Princess across this set reveals three groupings. The first is franchise proximity: Moon Princess 100 stays on Play'n GO, shares the Moon and Nature themes, and upgrades the mechanic to Cluster Pays while raising the max win ceiling to 15,000x. The second is studio loyalty: Book of Dead and Book of Dead GO Collect both run on Play'n GO's engine with a similar RTP band and high-direction volatility, though their Egyptian themes and expanding-wild mechanics offer a different flavour. The third is feature-driven ceiling chasing: Game of Thrones targets a 17,000x max win with high volatility from Blueprint Gaming, while Into The Wild Megaways and Medusa's Mystic Reels Megaways use the Megaways engine for a dynamic reel structure. Avalon sits apart as the lowest-risk option, running at medium volatility and a 1,400x max win, suited to players who want a similar RTP range alongside a much calmer session shape.
Players who want the closest structural and thematic replica should start with Moon Princess 100: it keeps the Play'n GO engine and the Moon plus Nature world while raising the max win ceiling to 15,000x through Cluster Pays. Those seeking high volatility from the same studio but a different mechanic should try Book of Dead, a Play'n GO title with expanding wilds and a high-volatility profile. For a higher prize ceiling on the same engine, Book of Dead GO Collect pushes the max win to 10,000x at medium-high volatility. Players interested in games like Moon Princess but with a nature-themed Megaways engine should look at Into The Wild Megaways, which delivers a near-matching RTP of 96.09%. Game of Thrones suits players who want high volatility and a 17,000x maximum prize target while accepting a lower RTP of 94%. Bloodmoon Amazonia is the pick for dual Moon and Nature theme continuity at an RTP of 97%. Avalon fits players who prefer a calmer medium-volatility session inside a similar RTP range.
Qualifying as a worthwhile casino game like Moon Princess required a match on at least two of four verified dimensions: mechanic character, volatility direction, max win range, and theme. A shared mechanic type carries the most weight because it governs how a session builds and releases tension. Volatility matters because Moon Princess is very high, and alternatives more than one clear band lower will feel structurally different regardless of RTP. The 5,000x max win is the reference ceiling for the original, so alternatives are scored partly on how close they sit to it or how far above they reach. Theme overlap across the Moon and Nature tags serves as a tiebreaker when mechanical and volatility matches are otherwise equal.
Meet the full Slots Almanac testing desk →
Online slots are games of chance. Every spin is decided by a random number generator, and no system, staking pattern, or "hot" machine changes the odds in your favour. There is no skill or strategy that guarantees a win, and no way to make a game due to pay out. Slots are a form of entertainment, and the cost of that entertainment is the money you stake. Treat them as something you spend on for fun, not as a way to make money or to recover money you have already lost.
Decide what you can comfortably afford to lose before you play, and set that as a firm budget. Licensed operators give you tools to hold yourself to it: deposit limits, loss limits, time-outs, reality-check reminders, and self-exclusion. Turn these on at the start rather than in the heat of a session, when a limit is far easier to set than to respect. Playing within a fixed budget, with limits already in place, is the single most reliable way to keep slots enjoyable.
Watch for the signs that it has stopped being fun: chasing losses to win money back, playing longer or more often than you intended, betting money you cannot spare, or feeling anxious, secretive, or low about how much you are playing. If any of that sounds familiar, take a break and reach out. Free, confidential help and advice are available through GamCare and BeGambleAware, whose support is independent of any operator and available whether you gamble a little or a lot. Asking for help early is a sign of good judgement, not failure. This site and its content are strictly for adults aged 18 and over.