This section explains the rules and RTP for the Danger High Voltage slot for Australian players. If you've read any review, the basics will be familiar. Big Time Gaming released this slot on 1 May 2017. It features four rows, six reels and 4,096 ways to win, and it's built around the song by Electric Six. The provider's own pages contain the useful details. These pages don't all say the same thing, and secondary sites often blur them together.
One caution before the details. Reviews of Danger High Voltage 2, the sequel, do not serve as a guide to this game.
Online slots can't be offered in Australia
Online casino games, such as online slots, may not be provided to individuals located in Australia. This restriction covers both offshore and Australian providers, and the games may not be advertised here either (Interactive Gambling Act 2001, s 15). The game itself remains the same. What changes is that there isn't a legal method to play it for real money online from Australia.
The main points of the law:
- The providers, not the players, commit the offences. ACMA can still block offshore casino websites. ACMA warns that if a site you use gets blocked, you may lose your account access and any funds in it.
- Illegal services lack the protections found in licensed services.
- No RTP minimum or Australian stake cap applies. No online casino can be licensed in Australia, so no local rules govern the settings of this game.
- The 2026 amendment hasn't changed this yet. Except for Schedule 5, its schedules begin on 1 January 2027. No law active by November 2026 provides an exception for online slots.
- BetStop doesn't block casino sites. The national self-exclusion register only includes licensed phone and online wagering. It doesn't include casino games. If gambling is part of your life in any form, set your limits before you start.
RTP: two provider figures, not one
The primary game page from Big Time Gaming shows the RTP as 95.67%. 96.22% is listed on its more recent beta page for the same title.
The provider supplied both numbers, meaning neither is an error. They refer to distinct versions of the game. The "around 96%" often mentioned in other places is simply the higher number rounded, which masks the difference between the two.
In practice, you should verify the RTP in the game's own information screen. The operator decides which version to use, and that screen is the sole source of this information.
A hit frequency of 41.88% is also mentioned on the beta page. This represents the proportion of spins that result in some win. Since a "win" in this context can be less than your stake, it says nothing about how often you come out ahead. The page has a volatility field, but it's empty, so no volatility rating is published.
The small print of the game's rules
Big Time Gaming has released these rules, which come largely from its beta page. The briefer main page omits most of them. Versions can differ, so read the in-game rules for the version in front of you.
Base game wilds
- Electric and Fire Wilds occupy an entire reel and can appear on reels two through five. They never land on reel one.
- Electric Wilds multiply the win for every way they assist in completing by 6x. A Fire Wild acts as a substitute but lacks this multiplier.
The trigger
Three or more My Desire Scatters start the feature. You then choose one of two bonus rounds. The choice is yours, not random, so it helps to know how differently the two rounds work.
High Voltage free spins
- You start with 15 free spins.
- Landing three or more scatters while the round is active grants 15 more. Since the retrigger has no limit, the round can continue to lengthen.
- A High Voltage Wild covering a whole reel can land on reels two through five. It increases win-way prizes by a random 11x, 22x, 33x, 44x, 55x or 66x.
- The wild substitutes for every symbol except the scatter.
It is important to understand that every multiplier is picked randomly. One High Voltage Wild might show 11x while another is 66x.
Gates of Hell free spins
- You start with 7 free spins, and you can win up to 19 more spins.
- For the entire round, the game randomly tags one symbol as a sticky wild, a feature Big Time Gaming calls first to market.
- When they land on reels two to five, sticky wilds act as substitutes for any symbol.
- Three free spins are added when four sticky wilds appear on one reel.
The two rounds cater to different preferences. High Voltage offers more spins and random multipliers. Gates of Hell offers fewer spins, with wilds that remain and accumulate.
Bonus Buy
According to the beta page, the Bonus Buy costs 65 times the wagering stake. This is presented as an option, and it isn't clear if it is in every version. Only consider it available if you see it within the game. The beta page shows stakes from €0.20 to €20.00, and the purchase price adjusts based on the stake you've chosen.
Maximum win
Some secondary pages mention a win of 15,746 times the stake. Big Time Gaming's beta page shows a maximum payout of "28,190 x bet". The figure from the provider is the primary one. Like the RTP, this may only be for the version mentioned on that page.
What the rules don't say
The provider pages used for this article omit details on the following scenarios:
- when the maximum win is hit
- when several wins occur simultaneously
- if a game malfunction happens
- if your connection fails
- if a bonus remains incomplete
The provider's published materials don't confirm these points, so don't assume how they're handled. The in-game help screen is the place to look.
Demo
A demo version using play coins is linked on the beta page. The main game page doesn't offer one.