Big Bonus Booster

Big Bonus Booster features classic slot symbols, including fruit, bells, and golden sevens, set against a bright and colourful backdrop. Watch for the special booster icons that can appear during play. The clean layout and simple design make it easy to enjoy the game’s classic look and feel.

Game Overview

Big Bonus Booster is an online slot developed by Inspired. The game features 6 reels and 50 paylines. Players can place bets ranging from £0.10 to £5.00. The slot includes main game spins, bonus rounds, free spins, a gamble feature, and a Fortune Bet mode.

Symbols and Payouts

Payouts depend on the bet level and may change with stake adjustments. The following table outlines symbol payouts for matches of 3, 4, 5, or 6 symbols:

Red 7: £0.50 (3x), £2 (4x), £5 (5x), £15 (6x)
Crown: £0.50 (3x), £2 (4x), £6 (5x), £20 (6x)
Wild: £1 (3x), £4 (4x), £15 (5x), £250 (6x)
Plum: £0.20 (3x), £1 (4x), £3 (5x), £8 (6x)
Watermelon: £0.20 (3x), £1 (4x), £3 (5x), £8 (6x)
Silver 7: £0.40 (3x), £1.50 (4x), £4 (5x), £10 (6x)
Blue 7: £0.40 (3x), £1.50 (4x), £4 (5x), £10 (6x)
Cherry: £0.10 (3x), £0.50 (4x), £2 (5x), £5 (6x)
Lemon: £0.10 (3x), £0.50 (4x), £2 (5x), £5 (6x)
Orange: £0.10 (3x), £0.50 (4x), £2 (5x), £5 (6x)
Grapes: £0.10 (3x), £0.50 (4x), £2 (5x), £5 (6x)

Winning combinations are achieved by matching 3 or more identical symbols on adjacent reels, starting from the leftmost reel, along an active payline.

Wild Symbol

The Wild symbol substitutes for all symbols except the Bonus Scatter.
In the base game, Wilds may appear on any reel. In the Free Spins Bonus, Wilds appear on reels 2, 3, 4, and 5.
During free spins, any Wild symbol that appears is locked in place for the remainder of the bonus round.

Win Lines

There are 50 paylines in play on each spin.
Winning combinations can be formed on any payline.
Only the highest win is paid per winning combination per line.
All wins are paid left-to-right on adjoining reels from the leftmost reel, except for the Bonus symbol.
Wins across different paylines are added together.

Big Bonus Trigger

Bonus symbols can land on any reel during the base game.
Three or more Bonus symbols appearing anywhere on the reels trigger the Big Bonus feature.
The starting Big Bonus value is determined during a pick-me round and varies as follows:
- 3 Bonus Symbols: Possible values are 20x, 25x, 30x, 50x, or 100x the stake.
- 4 Bonus Symbols: Possible values are 25x, 30x, 50x, or 100x the stake.
- 5 Bonus Symbols: Possible values are 30x, 50x, or 100x the stake.
- 6 Bonus Symbols: Possible values are 50x or 100x the stake.

Big Bonus Match 3 Pick Me

This round determines the initial Big Bonus value.
The number of pick tiles depends on the amount of triggering Bonus symbols:
- 6, 9, 12, or 15 identical tiles
Players pick tiles to unveil Big Bonus gems.
Finding three identical gems sets the starting value for the Big Bonus round.

Free Spins Mechanics

The trail collected in the pick-me round carries over into free spins.
Landing Big Bonus Booster gems on reel 6 adds to the active trail segment.
Completing the currently active segment with Booster gems increases the Big Bonus value.
Only gems from the current active segment appear on reel 6 during free spins.
During free spins, any Wild symbol that lands is fixed in place for all remaining spins in the round.
Free spins persist until a single win equal to or greater than the Big Bonus value occurs.

Fortune Bet Feature

Fortune Bet mode can be enabled via its dedicated button.
While Fortune Bet is active, the bonus feature is awarded 50% more frequently.
The paytable awards, initial Big Bonus value, gamble entry, and thresholds do not change when Fortune Bet is active; they are equivalent to those in the standard mode.

Gamble Feature

The gamble function may be set to 'on', 'on if win is ≥5x stake', or 'off'.
When enabled, any win—or wins equal to or greater than 5x the stake if so configured—may offer the gamble feature.
Upon activation, two gamble wheels appear:
- The left wheel enables attempts to increase winnings by half, double, or triple.
- The right wheel offers a chance to enter the Big Bonus round, with the potential win amount adjustable.
Should the pointer land on a green segment, the stated cash amount or feature entry is awarded. If it lands on red, the winnings are lost.
Winnings can be gambled up to the lesser of x2500 stake or £50,000.
Up to 6 Scatters can be accomplished during the gamble for the Bonus wheel.
The 'COLLECT' button can be selected at any time to secure winnings.
The expected return from the gamble feature is displayed within the game.

Spin Chance

Spin Chance is activated if a player's balance falls below the current bet but remains above zero.
This feature provides an opportunity to wager the remaining balance for one spin at the current stake.
Players may select 'PLAY' to proceed or 'NO THANKS' to exit with the remaining funds.
If the pointer stops on green, a spin at the selected bet is awarded. If it stops on red, any remaining credit is forfeited.

Game Controls

Spin: Initiates play at the current bet.
Stake: Opens a menu to adjust the stake.
Fortune Bet: Switches Fortune Bet mode on or off.
Settings: Accesses options and game information.
Game History: Displays previously played games and outcomes.
Sound: Toggles audio on or off.

Keyboard Controls

The SPACE BAR can be used in place of the main on-screen play button.

General Information

The game recovers to the last played state following any interruption.
Minimum bet per game: £0.10.
Maximum bet per game: £5.00.
The RTP is available in-game.
The maximum win per individual game is £50,000 (jackpots excluded).
Outcomes are predetermined; except as stated, player choices do not alter results.
Malfunction voids all pays and plays.