This guide covers online casinos available to Irish players that feature Relax Gaming games in their library. Relax Gaming is an Estonian developer and B2B supplier known for Money Train series and Book of 99 (99% RTP). Relax also distributes third-party content via its Silver Bullet and Powered By programmes.
About Relax Gaming
Founded in 2010 and headquartered in Tallinn, Estonia, Relax Gaming has built a reputation for a unique aggregation model (Silver Bullet, Powered By) alongside its own slots. Their games are available at hundreds of casinos worldwide, including many that accept Irish players.
Top Relax Gaming Titles
- Money Train series — High-volatility slot series; Money Train 4 among the most anticipated recent releases
- Snake Arena — High-octane multiplier slot; unique mechanic
- Volatile Slot — Transparent variance communication; minimalist design
- Temple Tumble Megaways — Cascading wins; Megaways edition; popular with Megaways fans
- Book of 99 — Notable for 99% RTP — one of the highest published RTPs in slots
What to Look for in a Relax Gaming Casino
When choosing a casino specifically for Relax Gaming games, check that the full catalogue is available (not just selected titles), that RTP information is displayed in the game's information panel, and that the casino holds a reputable licence (MGA, UKGC, or Gibraltar). Demo play (free play) for Relax Gaming games should ideally be available without registration.
Licensing and Fairness
Relax Gaming games are tested by independent certification labs (eCOGRA, iTech Labs, GLI, or BMM) before distribution. Each title must pass RNG certification. The RTP figures published by Relax Gaming reflect the results of these certified tests. No Irish casino currently holds a GRAI gaming licence — casino licences are expected 2027–2028.
Playing Relax Gaming Games on Mobile
Relax Gaming develops all games in HTML5, ensuring compatibility across iOS and Android without additional downloads. Game loading speeds and graphical quality on mobile are equivalent to desktop. Some titles include portrait mode for one-handed play.
Also available: Slots Gallery — casino specialist. 18+ | T&Cs apply | Play responsibly
Frequently Asked Questions
Book of 99 by Relax Gaming is published at 99% RTP — one of the highest stated RTPs available in a slot. High RTP doesn't mean winning sessions are guaranteed, but it minimises the theoretical house edge.
Money Train, Money Train 2, 3, and 4 are a high-volatility slot series from Relax Gaming. The train-heist theme and Persistent Symbols mechanic have made the series among the most popular high-volatility slots globally.
Relax Gaming functions both as a game developer and a B2B content aggregator, distributing third-party titles via Silver Bullet and Powered By programmes. It's one of the more complex supplier structures in the industry.
No. GRAI issued only remote betting licences in 2026. Casino gaming licences are expected 2027–2028. Irish players use MGA, UKGC, or Gibraltar-licensed casinos.
Relax Gaming: Top Games Available in Ireland
| Game | RTP | Volatility | Key Feature |
|---|---|---|---|
| Money Train 4 | 96.4% | Very High | Money Cart bonus, multiplier symbols |
| Money Train 3 | 96.1% | Very High | Persistent multipliers, respins |
| Money Train 2 | 96.4% | Very High | Starter, Payer, Collector symbols |
| Snake Arena | 96.5% | Medium–High | Snake grid mechanic |
| Hypernova Megaways | 96.5% | High | Megaways, up to 100,000× max win |
What Makes Relax Gaming Distinct
- Money Train series: The Money Train franchise (1, 2, 3, and 4) has become one of the most popular high-volatility slot families in the Irish market. The 'Money Cart' bonus round with persistent multiplier symbols drives the variance and the large max wins (up to 50,000–100,000×).
- Aggregation platform: Relax Gaming also operates as an aggregation platform, distributing content from smaller studios — so a 'powered by Relax Gaming' casino may offer titles from partner studios alongside Relax's own games.
- RTP range: Relax Gaming slots typically have RTPs of 95–97%, competitive with the broader market. High-volatility titles may have lower hit frequencies to compensate for large max wins.
High-Volatility Slots: What to Expect
- High-volatility slots (like the Money Train series) can go many spins between significant wins — budget accordingly.
- The advertised max win (e.g. 50,000×) is achievable but extremely rare — it should not be your base expectation.
- Set a session budget before playing high-volatility slots and stick to it. Responsible gambling tools (deposit limits, session limits) are available at all GRAI-licensed sites.
- 18+ | Gambling Awareness Trust: 1800 753 753
Written by Mark Craic, editor at CraicBet with 8 years in gambling analytics. See how we review.