People often search whether playing the Book of 99 slot online in Australia is legal. According to the Interactive Gambling Act 2001 (Cth), no online casino, Australian or offshore, may legally offer it for real money if you are physically in Australia. The free spins and 99% RTP of the game explain its mechanics in other regions. These don't alter the law.
The game in brief
Book of 99 is a video slot from Relax Gaming featuring a theme based on Greek mythology and the ancient world. It uses 10 paylines across three rows and five reels. Relax Gaming describes it as a 99% RTP slot, where book symbols trigger free spins. Most reviews agree on these points.
How Australia's rules change Book of 99
| Rule | What it changes for this game | Source |
|---|---|---|
| Online casino games, including slots, may not be provided to people in Australia or advertised to them | No lawful real-money Book of 99 offer exists for you online | Interactive Gambling Act 2001 (Cth), s 15; ACMA |
| ACMA can ask internet providers to block illegal gambling sites | Offshore pages offering the game may be inaccessible | ACMA |
| No online casino can be licensed here | No Australian stake cap or RTP minimum applies to the game | Interactive Gambling Act 2001 (Cth) |
| BetStop covers licensed online and phone wagering | Registering doesn't exclude you from online slots | BetStop (ACMA) |
The whole game is unavailable, not one feature
Certain nations allow a slot to remain legal while limiting specific elements. Australia doesn't follow this approach. In this case, the ban applies to the entire game. No lawful Australian online offer provides the bonus rounds or stake options of Book of 99. The Act's offences target the providers rather than the players.
Blocking
ACMA can ask internet service providers to block websites providing prohibited services, such as online slot machines. Sites that advertise them can also be targeted. A blocked page changes what you can reach, not how the slot plays.
No stake cap and no RTP floor
Relax Gaming's settings allow bets from a minimum of €0.10 to a maximum of €100. No equivalent in Australian dollars is provided. This range comes from the provider and isn't an Australian legal limit. With no licensed online slots in Australia, no Australian RTP minimum exists.
What the rules don't cover
Australian rules don't establish a minimum duration for a spin on online slots. They also don't oversee bonus buys, turbo spins, autoplay, or limits on deposits and losses for a game of this type. Any site asserting that Australian law disables any of these features is mistaken. The law doesn't regulate such controls because it prohibits the game outright.
BetStop
BetStop covers licensed online and phone wagering as the national self-exclusion register. Online casino slots aren't licensed here, so registering with BetStop won't exclude you from Book of 99.
The 2026 reforms
Parliament passed gambling law reforms on 19 August 2026. According to ACMA, most of these take effect on 1 January 2027. As of 10 November 2026, ACMA hasn't stated that these reforms altered the online slot prohibition.
How the free spins start
Relax Gaming says there are two ways to enter the bonus:
- Three books appearing on the reels activate 10 free spins. Reviews call the book both a scatter and a wild.
- Collecting 99 books during the base game also activates 10 free spins. One review mentions that the collection meter increases for every wild that lands in the main game. Relax Gaming's page confirms the collection trigger but provides no explanation of how the meter progresses.
A character picked at random gets an expanding ability during the bonus that can expand to cover an entire reel. Landing three or more books while in the bonus retriggers an additional 10 free spins.
Getting the figures right
Maximum win. Relax Gaming mentions a possible win of up to 5,000 times the bet. While some sites list 12,075 times, the figure from the provider is the one to rely on.
Release date. Relax Gaming announced the game in May 2021 and stated it was available that month. A May 2022 date found in some listings is wrong.
RTP versus test results. One review mentions a 500-spin test with a 74.05% return. That figure isn't the game's RTP. A few hundred spins tell you very little about a 99% theoretical return, which occurs over a huge number of spins. Relax Gaming's product page doesn't list other RTP versions, so the provider page alone can't confirm if operators use different settings.
Volatility and demo. Reviews often rate the game as high volatility, but Relax Gaming's page provides no rating. It doesn't mention a free demo either. Demos shown on other sites don't make a real-money version lawful for Australian players.
If you gamble in a way that is legal where you are, set a limit before you start and stick to it.