Checked against Relax Gaming’s Book of 99 product page on 19 August 2026.
Open publisher sourceOfficial fun mode
Book of 99 Demo — Play Free in Fun Mode
Explore the real Relax Gaming interface, collection rail and help pages before deciding whether the game suits you.
Ireland edition
Ireland’s new licensing regime is opening in stages.
GRAI began accepting remote betting applications in February 2026. A betting licence should not be assumed to cover every online casino game or operator.
en-IE · EUROpen the Ireland demo guide
Official Relax Gaming launcher
Official fun mode
Open the real Book of 99
The game loads only when you choose to start it. No account, deposit or real balance is used inside this page.
A purposeful test
Four checks inside the demo
Random demo spins are not a statistical test. Use the session to inspect the interface and the rules the game actually presents.
- Open the paytable at the displayed demo stake and compare the regular-symbol values.
- Confirm the RTP, stake range and maximum win shown by the version available to you.
- Watch the left collection rail move whenever a Book wild lands in the base game.
- If Free Spins open, record the selected symbol, its expansion threshold and whether a retrigger appears.
RTP99.00%
Maximum win5,000×
Reels5 × 3
Paylines10
Bet range€0.10–€100
What it can verify
A real interface and readable rules.
- Reel layout, controls and help navigation.
- The collection rail and both feature descriptions.
- The RTP and limits displayed by the loaded game version.
- How the expanding symbol is presented when the feature appears.
What it cannot prove
Your future return or feature frequency.
- A short run cannot estimate personal RTP.
- Demo credits cannot show how a cash loss will feel.
- Recent spins do not make a Book, feature or win “due”.
- The launcher cannot verify a casino’s withdrawal or bonus terms.
Desktop and mobile
The game is browser-based; the surrounding controls may change.
On a narrow screen, open the game menu before the paytable and collection help. Landscape view may give the reels more room, while portrait view keeps the launcher easier to read. The casino wrapper can differ from the publisher demo.
VerifiedThe guide verifies the Relax Gaming fun-mode launcher, not a standalone Book of 99 app.
Continue with the full round walkthrough →
What we verified
Claims tied to visible evidence.
Published specifications establish the numbers. The live fun-mode help screens establish how those numbers and feature rules are presented to a player.
Checked inside the official fun-mode launcher and retained as dated help-screen evidence.
See the rule walkthrough →The original announcement documents the launch positioning and the 99% return figure.
Open release recordBefore paid play
Keep the demo lesson, not the demo balance.
Set a cash limit and a time limit before leaving fun mode. Do not increase either limit because the collection counter is close to 99.