What does the Pre-Bonus round determine in Hottest 666?

It determines the number of Free Spins, the multiplier, and the number of game grids used in the main bonus. Each parameter can reach a maximum of 6.

Can you influence the result of the Pre-Bonus round?

Yes, through Buy Extra — you can reroll the values or pay to add +1 to any parameter until it reaches the maximum of 6.

What does Wild Rain do in the bonus game?

After a spin, several Wilds randomly appear on the reels to help form winning combinations. They disappear before the next spin.

Can the bonus round be extended in Hottest 666?

No, the Bonus game is triggered once per activation — it cannot be retriggered during the round.

Why is the slot called Hottest 666?

The number 666 is used as a symbol of luck within the game's neon theme, with the “666” combination presented as one of the most desirable results on the screen.

Hottest 666 (BGaming) Online Slot Review & Demo

Neon lights and flames wrap around classic fruit symbols — Hottest 666 from BGaming gives the recognizable theme a modern makeover, with the real highlight hiding in an unusual Pre-Bonus round that sets the bonus parameters before it even begins.

10 paylines, 5×3 grid, Very-high volatility, 96% RTP, Hit Rate 5.50, up to x6,600 max multiplier.

How it works

3 Scatters on reels 1, 3, and 5 trigger the Bonus game, but first a Pre-Bonus round kicks in, presented as its own 3-reel slot machine. This round determines three key parameters for the upcoming bonus — the number of Free Spins, the multiplier, and the number of playing fields — each capable of reaching a maximum of 6.

Bonus features

💡 Pre-Bonus game and Buy Extra feature

During the Pre-Bonus round, you can respin the final values for Free Spins, the multiplier, and playing fields, or purchase a +1 boost to any of these values up to the maximum of 6, at a displayed price. Once a value reaches 6, purchasing more for that cell is disabled — which is exactly why landing that coveted "666" on screen feels so satisfying.

💡 Bonus game

Once the Pre-Bonus round finishes, the active reels unlock according to the determined number of playing fields, and Free Spins begin. All wins from these spins are totaled and then multiplied by the previously set multiplier. This round cannot be retriggered.

💡 Wild Rain feature

During the Bonus game, a random number of Wilds can appear on the reels after any spin, substituting for any symbol to complete winning combinations. All Wilds disappear before the next spin begins.

💡 Buy Bonus

The Bonus game can be purchased directly at the price shown on the button, which adjusts automatically to your bet size.

Volatility

Very-high volatility with a 5.50 Hit Rate promises fairly rare but potentially massive returns — the 96% RTP unfolds mostly through a lucky Pre-Bonus round, where maxing out all three parameters opens the door to the x6,600 stake ceiling (up to €231,000 listed max win).

Pros

A unique Pre-Bonus round with purchasable parameters — a rare mechanic among slots
A high win ceiling of up to x6,600 stake
Wild Rain regularly adds unexpected Wilds during the Bonus game
Buy Bonus gives direct access to the Bonus game without waiting for Scatters

Cons

The 96% RTP sits below the market average
The Bonus game can't be retriggered — just one pass is available
The Pre-Bonus round's full potential only unfolds if you're willing to buy up its values

Who it suits

Player profile	Verdict	Why
Fans of unusual bonus-preparation mechanics	🟢 Great fit	The Pre-Bonus round with purchasable parameters is a rare feature among the provider's slots
Hunters of large wins	🟢 Great fit	The x6,600 ceiling is reachable by maxing out all three bonus parameters
Players on a tight bankroll	🔴 Not a fit	Very-high volatility calls for a solid buffer through long dry stretches
Fans of classic neon fruit themes	🟢 Great fit	A recognizable 666 theme with a modern neon design and fire effects

⚡ Is Hottest 666 worth playing?

Yes, if you like the idea of a customizable bonus — the Pre-Bonus round's option to buy each parameter up to the max turns bonus prep into its own mini-game, and the x6,600 ceiling makes chasing that "666" combo genuinely thrilling.