Wondering who actually makes Monopoly slots? Monopoly isn't one slot family — Hasbro has licensed the board game out to at least three completely unrelated studios, each running its own mechanics under the same red-and-white logo. We cover the three titles most likely to matter to UK players: WMS's Big Event Wonder 500, Big Time Gaming's Megaways take, and Gamesys's Paradise Mansion.
Where to Play Monopoly Slots
Every Monopoly slot at a glance, by studio
None of these three share a developer — figures checked 6 July 2026:
| Game | Studio | Year | RTP | Max win |
|---|---|---|---|---|
| Big Event Wonder 500 | WMS (Light & Wonder) | 2023 | 94.1% | 500x |
| Monopoly Megaways | Big Time Gaming | 2019 | 96.5% | 14,700x |
| Paradise Mansion | Gamesys (Bally's) | 2014/15 | 96.29% | 10,000x |
These aren't sequels or spin-offs of each other — each studio negotiated its own licence with Hasbro and built an entirely separate game engine. The "500" in Big Event Wonder 500's name refers to its own 500x max-win cap, not a shared numbering system.
Every game, reviewed
1. Monopoly Big Event Wonder 500 (2023)
Released 24 May 2023 by WMS, now folded into Light & Wonder's studio portfolio alongside the legacy Bally and Barcrest brands. It's a straightforward 5-reel, 3-row grid with 20 fixed paylines, built around a Wild that substitutes for everything except the Big Monopoly Event and In Jail scatters. Landing scatters on reels 1, 3 and 5 triggers the Big Event Bonus, awarding Community Chest card packs worth up to 20 free spins with as many as 15 guaranteed wins and a multiplier climbing to 78x. An In Jail symbol strips up to five of the lowest-paying symbols from the paytable during free spins, tightening the pay table in the player's favour. RTP sits at 94.1%, Low volatility, and a max win of 500x stake — a figure baked directly into the game's own name, despite one AI-search-summary result during this page's research incorrectly suggesting a wildly higher number that doesn't match any source we could verify.
2. Monopoly Megaways (2019)
Released December 2019 by Big Time Gaming — the studio that invented the Megaways mechanic itself, licensing the Monopoly brand entirely independently of WMS. Six reels expand up to 117,649 ways to win, and the standout feature is a free spins round with unlimited, increasing multipliers that can snowball a session's biggest wins. RTP is a healthy 96.5%, with a 14,700x max win that dwarfs both other games on this page.
3. Monopoly Paradise Mansion (2014/15)
Gamesys secured its own, entirely separate Hasbro licence to build this one — industry reporting at the time was explicit that it shares nothing mechanically with the WMS-licensed Monopoly slots of the era. A 5-reel, 3-row, 20-payline game with two bonus rounds: the Property Bonus and the Free Parking Bonus. RTP runs at 96.29%, with a 10,000x line-bet max win. Gamesys itself was acquired by Bally's Corporation in November 2021, so this title's ownership now sits inside the Bally's group rather than with an independent operator.
Why "Monopoly slots" isn't one family
Unlike most of the franchises on this site, there's no single studio behind "Monopoly" as a slot brand. Monopoly isn't alone in this — our Cops 'n' Robbers guide untangles a similar four-studios-one-name situation, and our Deal or No Deal guide does the same for that licensed TV-format brand. Hasbro licenses the board game out separately to whichever studio wants to build a themed title, and at least three have done so with genuinely different mechanics: WMS/Light & Wonder's low-volatility grinder, Big Time Gaming's high-ceiling Megaways take, and Gamesys's own in-house build. If you're hunting for a specific "Monopoly slot" you saw somewhere, check the studio name in the small print — there are more Monopoly-branded games beyond these three, and this page only covers the ones flagged as most relevant to UK players.
Monopoly Big Event Wonder 500: quick facts
| Provider | WMS (now under Light & Wonder) |
|---|---|
| First released | 24 May 2023 |
| Layout | 5 reels × 3 rows, 20 fixed paylines |
| RTP | 94.1% |
| Volatility | Low |
| Max win | 500x stake |
| Signature feature | Big Event Bonus — Community Chest card packs worth up to 20 free spins |
✓ Facts checked 6 July 2026
The maths: three very different risk profiles
What a hundred £1 spins costs at each game's published RTP:
| Game | House edge | £1 × 100 spins |
|---|---|---|
| Big Event Wonder 500 (94.1%) | 5.90% | £5.90 |
| Monopoly Megaways (96.5%) | 3.50% | £3.50 |
| Paradise Mansion (96.29%) | 3.71% | £3.71 |
✓ Calculated from the published RTPs — checked 6 July 2026
Big Event Wonder 500 pairs the lowest RTP of the three with the lowest volatility and lowest max win — a genuinely different risk profile from the other two rather than simply a worse version of either. Session tools on our Responsible Gambling page.
History and licensing
Monopoly has been licensed to slot studios since well before online casinos existed, going back to physical Monopoly-branded fruit machines. Gamesys's Paradise Mansion, from 2014/15, and WMS's various Monopoly titles both predate this page's three featured games by years, while Big Time Gaming's 2019 Megaways version applied the studio's own signature mechanic to a licence most other developers were still treating as a straightforward reskin.
Why this matters for UK players
Because these are separate corporate licensing deals rather than one franchise, there's no shared roster, no shared RTP philosophy, and no guarantee that a casino carrying one Monopoly slot carries any of the others — check the studio name before assuming a lobby's "Monopoly" game is the one you're after.
Beyond the reels
Big Time Gaming PTY Limited holds UK Gambling Commission account 38696. Gamesys Operations Limited holds account 38905 (licence 038905-R-319430-021, a Remote Casino and Bingo Operating Licence) — worth noting for the record that the Gambling Commission fined Gamesys Operations Limited £6,071,292 in 2022 over anti-money-laundering and licence-condition breaches between November 2021 and July 2022, a matter of public regulatory history unrelated to this specific game. Light & Wonder, which owns the legacy WMS studio brand behind Big Event Wonder 500, holds its own UK Gambling Commission licence.
What players say
Players chasing volume and frequent small wins tend to prefer Paradise Mansion's mid-range profile, while those specifically hunting Megaways-style volatility and a five-figure ceiling gravitate to Big Time Gaming's version. Big Event Wonder 500 draws a different crowd entirely — players who want a calmer, lower-stakes session and are happy trading win potential for a gentler ride.
Big wins: what we could verify
We checked BigWinBoard's community-wins page and Casino.org's biggest-wins roundup, and neither references any of these three specific Monopoly titles by name. We're not aware of a documented, verifiable big win tied to any of them, so we're not repeating any unverified figure here.
The best Monopoly slot for each type of player
| If you want… | Play | Why |
|---|---|---|
| The highest win ceiling | Monopoly Megaways | 14,700x stake and a genuinely high-volatility Megaways engine |
| A balanced RTP with two distinct bonus rounds | Paradise Mansion | 96.29% RTP and a 10,000x cap from Gamesys's own build |
| A calmer, lower-stakes session | Big Event Wonder 500 | Low volatility by design, with the 500x cap built into its own name |
Our verdict on Monopoly slots
Sister Slots score: 6/10 — not a real "family" so much as three separate studios' answers to the same licensing brief, with genuinely little in common beyond the branding.
| Features | 6/10 — each studio brought its own mechanic rather than reskinning a shared engine, which cuts both ways for consistency |
|---|---|
| Win potential | 7/10 — Big Time Gaming's 14,700x ceiling carries the franchise's reputation almost single-handedly |
| Design | 6/10 — all three lean hard on recognisable board-game iconography rather than original art direction |
| Playability | 6/10 — volatility swings wildly by studio, so check which game you're actually loading before you set a budget |
Play here if you specifically want a licensed board-game theme and are comfortable checking which studio's version you're loading. Look elsewhere if you were expecting a single coherent Monopoly slot family — there isn't one. Our features hub breaks down the mechanics each of these three studios actually used.
Monopoly Slots FAQs
Who makes Monopoly slots?
No single studio — Hasbro licenses the brand separately to multiple developers, including WMS (now Light & Wonder), Big Time Gaming, and Gamesys (now Bally's).
Are all Monopoly slots part of the same family?
No. Each studio built its own engine under its own separate Hasbro licence — they share a theme, not a codebase or a roster.
Which Monopoly slot has the biggest max win?
Monopoly Megaways, at 14,700x stake, developed by Big Time Gaming.
Which Monopoly slot has the best RTP?
Monopoly Megaways again, at 96.5%, just ahead of Paradise Mansion's 96.29%.
Is there a verified big win story for any of these games?
We couldn't find one on any major big-wins tracker for any of the three titles covered here.
Are these slots fair?
Yes — Big Time Gaming and Gamesys Operations Limited both hold active UK Gambling Commission licences, and Light & Wonder holds its own separate UK licence covering WMS's content.
Sources & Verification
Primary sources checked 6 July 2026: WMS/Light & Wonder, Big Time Gaming and Gamesys’ own game listings for each title’s RTP and max win, since this franchise is genuinely split across three unrelated developers; the UK Gambling Commission’s public register for Big Time Gaming PTY Limited (account 38696) and Gamesys Operations Limited (account 38905).
Paul edits Sister Slots’ UK slot-family guides. He researches provider histories, mechanics and published game data, checking material claims against provider sources and relevant public records. Unless a page states a dated hands-on method, it reflects documented editorial research rather than real-money play. More about Paul →