Game studio

Relax Gaming

TypeSlots and aggregationFounded2010HQMaltaReviewed6 games

Relax Gaming is a Malta studio with two distinct identities: it makes original high-volatility slots, most famously the Money Train series, and it operates an aggregation platform that distributes third-party slot content through a single casino integration. The Money Train series is the studio's strongest contribution to the slot market, featuring a respin-mechanic at extreme volatility with maximum win potential well into the five-figure multiplier range. Dream Drop is its progressive jackpot network. The aggregation side means the Relax Gaming section of a casino lobby can contain titles from many different studios alongside the originals.

Key takeaways

  • What it makes: extreme high-volatility original slots (Money Train series, Hellcatraz) plus a third-party aggregation platform that distributes content from partner studios.
  • Flagship games: Money Train 2, Money Train 3, Money Train 4, Temple Tumble, and Hellcatraz; the Money Train series defines the studio's reputation.
  • Dream Drop jackpots: Relax Gaming's progressive jackpot network contributes a portion of qualifying bets across multiple titles to five prize tiers, with the Mega tier paid out at least once per month.
  • Volatility warning: the Money Train series is extreme-high variance; most sessions end without a significant win, and the buy feature costs up to 100x stake.
  • RTP note: Money Train titles typically publish 96.4%; the buy-feature version may carry a slightly different certified RTP depending on the casino build.

Relax Gaming games we've reviewed

The studio’s two functions

Relax Gaming occupies an unusual position: it is both a game developer with a strong original catalogue and an aggregation platform that distributes other studios’ content. Most players encounter it through the Money Train series and may not realise the Relax Gaming lobby section at their casino also contains titles from partner studios that Relax distributes but did not make.

That distinction matters when evaluating quality. The core Relax original titles have a consistent standard. The aggregated partner titles vary, just as they do in any distribution network. When playing a Relax Gaming-labelled game for the first time, the in-game credits identify whether it is a Relax original or a partner title.

How the Money Train bonus works

The Bonus Express respin mechanic is the reason the Money Train series has the reputation it does. The bonus round starts with three respins and a mostly empty grid. Each Money symbol that lands locks into place and resets the counter to three. If no Money symbol lands on a respin, the counter decreases. When the counter reaches zero, the round ends.

The locked symbols carry values and abilities. The Collector gathers the cash values of all other symbols in its row or column. The Payer distributes its own value to adjacent symbols. The Sniper targets the highest-value symbol and multiples it. The Necromancer respawns symbols that have already paid. When multiple character types land near each other, their abilities interact, multiplying outcomes across the grid.

The extreme maximum wins on Money Train titles come from full-board scenarios where high-value collector and multiplier characters interact across many locked positions. Those sequences are rare; the bonus round more commonly resolves with two to six locked symbols and a modest win. That gap between the typical outcome and the maximum is what defines extreme volatility.

Temple Tumble and Hellcatraz as alternatives

Temple Tumble is a cascade-based slot set in a collapsing temple. Reels are replaced by a waterfall of symbols; winning combinations clear and new symbols fall from above. Free spins introduce multipliers that increase with each cascade step. It is a high-volatility game with a more traditional feel than Money Train, and it attracts players who want the Relax standard without the complexity of the respin mechanic.

Hellcatraz is set in a prison and uses a grid that fills with locking wilds during the bonus round. Each locked wild adds a multiplier to the board total, and the round ends when the grid is full. The maximum win is lower than Money Train but still at the extreme end of what licensed casinos offer. Hellcatraz is a better fit for players who find the Money Train character-ability system hard to follow but still want very high volatility.

Dream Drop: the monthly-guaranteed jackpot

Dream Drop’s defining feature is the Mega tier’s monthly guarantee. Unlike progressives that run until a winner hits the qualifying combination, the Dream Drop Mega jackpot must pay out by the end of each calendar month regardless of pool size. That creates a predictable reset cycle.

For players tracking jackpot timing, this matters. In the final days of a month where the Mega has not yet paid, the pool has had the full month to accumulate. That is not a beatable edge, because the timing of the trigger within the remaining window is random, but it does mean the Mega payout at month-end is larger than at month-start. Base-game return on jackpot-participating titles is slightly reduced by the pool contribution, which is worth knowing before comparing Dream Drop titles to non-jackpot versions.

Aggregation platform: what it means for players

The Relax Gaming aggregation platform integrates third-party studio content into a single feed for casino operators. From a player’s perspective, this means a casino that uses the Relax platform can offer a wide range of studios through one lobby section. The operational benefit is lower integration cost for the casino; the player benefit is a broader catalogue without multiple separate integrations.

The aggregated titles are not Relax originals. They have their own RTP certifications, volatility profiles, and studio quality levels. Using the Relax platform for delivery does not change the underlying game maths. Checking the credited studio and the in-game RTP applies to aggregated titles exactly as it would to any other game.

Where to play Relax Gaming titles

The Money Train series and Temple Tumble are widely available at licensed operators including offshore and crypto-friendly casinos. Casinos on the crypto casinos and fast-payout casinos pages include operators carrying the full Relax catalogue with verified payout records.

Money Train games carry real financial risk. The buy feature costs up to 100x stake for direct bonus access; most sessions will not produce a significant win. Set a hard session limit before you start. GamCare and Gambling Therapy are free, confidential, and there whenever gambling stops feeling like a choice.

Frequently asked questions

Which online slot provider pays the most?

None pays more by policy; every certified game returns its published RTP, so the comparison is per title. Relax Gaming sits mid-pack by that measure: Money Train 2's verified 96.4% beats the common 95% range many studios' casino builds run at, while trailing the high-RTP vintage classics. Relax itself is a licensed MGA and UKGC studio that doubles as an aggregation platform, so the certified maths, not the brand, is what decides your return.

What are the best Relax Gaming slots?

Money Train 2 leads, the studio's most-played title with a verified 96.4% RTP and a 50,000x published max win. Its Bonus Express respin mechanic, with locking character symbols that interact during the bonus round, produces the extreme wins the series is known for. Hellcatraz and Temple Tumble are the next most played, both high-volatility but with simpler bonus structures. Which is best depends on how much complexity you want in the bonus round.

What RTP does Money Train 2 have?

Money Train 2 publishes 96.4%. Some casinos run a lower certified build; confirm the figure in the game's information panel before you play. The RTP is reached across a combination of base-game pay and rare large bonus events. Sessions without a bonus round will typically end below the RTP, which is the expected experience on an extreme-high-variance game, not an indication the maths are wrong.

What countries allow Relax Gaming?

Its games run wherever its supplier licences and its operators' casino licences overlap: the UK, Malta-licensed markets across Europe, and the international and crypto lobbies its aggregation deals reach. Tightly regulated markets it hasn't entered, including most regulated US states, simply won't show the catalogue. The practical check beats any list: search Money Train in your casino's lobby, and its presence answers the question for your country.

What are the best games to play to relax?

Fair warning on the name: Relax Gaming builds some of the least relaxing slots in the industry, with the Money Train series concentrating its return into rare, extreme bonus events. If actually unwinding is the goal, the calmer corners of a casino are low-volatility slots, where small wins land often, and simple even-money table bets. The studio's name describes its founding ambition to simplify casino tech, not the heart rate its games produce.

What slot has 99% RTP?

Nothing from Relax Gaming; Money Train 2's verified 96.4% is representative of its range. The ~99% figure belongs to a few vintage classics, most famously NetEnt's Mega Joker in optimal Supermeter play, and to provably fair casino originals that publish their returns openly. Modern high-volatility slots structurally can't reach it, because their huge max wins, 50,000x in Money Train 2's case, are funded out of the return players see between bonuses.