Tournaments Bonuses

Big Box Bonus

Review, Demo Play, Payout, Free Spins & Bonuses

Big Box Bonus is an online video slot created by Slot Factory. It has 5 reels and 3 rows with 20 fixed paylines. It has wilds and scatters, and features include free sp...ins and random prizes. The RTP is 91.93% to 97.46%, and the volatility is medium to high.

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  • Up to 500x bet available as a win
  • Up to 9 free spins
  • Wilds pay out when completing certain wins
  • Game does not work well on laptop screens
  • Free spins cannot be retriggered


Step up and play Slot Factory's take on a game show favourite with their slot Big Box Bonus. The wilds and the Big Box Bonus symbol can fetch the biggest prizes, while the free spins feature is triggered by a scatter symbol. In addition, if one or more wilds forms a win with any of the box symbols, each wild will contribute their own value to the win. 1 or more wilds combined with a blue box win will pay 10x the line bet each, 20x if combined with a red box win, and 40x if they combine with a gold box for a win. 

Theme, Graphics & Soundtrack

Taking its inspiration from the UK version of the game show 'Deal or No Deal', fans of the TV show will recognise its elements through the game's symbols, such as the style of the boxes, the analogue telephone wild symbol and the suited figure on the phone, as well as the random values that the boxes can reveal during gameplay. A soundtrack that wouldn't be out of place on any game show plays in the background, along with constant studio audience applause, which rises to cheers if there's a win. The reels are set on a black screen with a neon frame, and the animated TV studio spotlights in the background add to the game show atmosphere. 

Big Box Bonus

Big Box Bonus RTP and variance

The RTP for Big Box Bonus is 91.93% to 97.46% and the volatility is medium to high. 

How to Play Big Box Bonus

  1. The game loads straight to the reels, so before you start, take a look around the settings and paytable info. The menu button will show basic on/off sound settings and access to the paytable, which also includes information about the rules of the game, features and payline configurations.

  2. Use the settings symbol to adjust your bet. 
  3. The settings symbol also accesses autoplay. Select autoplay for unlimited automatic spins. To stop the spins, press the stop button. There are no loss or win limits on autoplay, and it will continue even after a free spins bonus feature. If you choose to use autoplay, keep an eye on your balance and be ready to stop before you need to.
  4. You're ready to start. Please play responsibly.

Bet Sizes & Paytable Wins 

Bet sizes range from 0.01 to 25.00 coins per line on 20 fixed lines per spin, or 0.20 to 500 coins per spin. The wild returns the highest paytable win for the base game with 150x your bet for 5 of a kind,while the Big Box Bonus symbol will win 120x for 5 of a kind. 

Just like the game show that inspired them, the box symbols reveal random prizes if they fall into a winning combination. Each box in a winning combination of blue boxes will pay out a random amount up to 100x your line bet, each box in a winning combination of red boxes can reveal up to 250x, and gold boxes can reveal amounts of up to 500x. These amounts are then added together to form the total win for that spin.

Max-win 221x
Volatility High
Top RTP 94.70%

Big Box Bonus Free Spins 

Land 3 or more scatters to trigger the free spins bonus game. 

3 scatters = 5 free spins
4 scatters = 7 free spins
5 scatters = 9 free spins

During the free spins round, the gold boxes come into play, increasing the chance for bigger wins. The free spins round cannot be retriggered.

Big Box Bonus Review

One of a growing number of Slot Factory demo slots available in our catalogue, Big Box Bonus is a slot with free spins with a gameshow format based on picking random prizes. Instead of going down the obvious route of having the player pick the prizes, the random prize element is incorporated into the base game and free spins feature. 

With each box symbol in a win multiplying the line bet by anything up to 500x, there is the potential for some impressive wins. However, the higher-than-average volatility means that these are few and far between. Like Money Grows on Trees from Slot Factory, there are 20 fixed paylines, the number of free spins depends on the number of scatters, and the RTP can be quite low. The number of free spins on offer is also low, with no retrigger option. 

Disclaimer: Big Box Bonus trademark / license is owned by Slot Factory. This site is not endorsed by Slot Factory.

Slot Data
Slot Name: Big Box Bonus
Software: Slot Factory
RTP: 94.70%
Volatility: High volatility
Paylines: 20
Reels: 5
Min Bet (all lines covered): £0.20 (GBP)
Max Bet: £500 (GBP)
Top Win: 221
Features: Bonus Game, Wild Symbol, Scatter Symbol, Multiplier, Free Spins, High volatility, 5 Reels
UK Available in UK? Yes. Slot Factory have a UKGC license and are allowed to offer their games at UK licensed casinos.


What is the biggest win in Big Box Bonus?

During the free spins bonus, 5 gold boxes can reveal up to 500x your line bet each. For example, 5 gold boxes with 100x, 50x, 250x, 300x and 200x would be added together to pay 900x your line bet. A maximum win where all 5 gold boxes revealed 500x each would bring in 2500x your line bet.

Do the wilds pay out?

The wild has the highest regular payout on the paytable for 5 of a kind. Wilds will also pay out a multiple of your line bet if they combine to form a win with the box symbols. The multiplier on the wild will depend on the colour of the boxes it forms a win with. For example, if a wild forms a win with blue boxes, it will pay 10x the line bet, which will be added to whatever multipliers are revealed by the boxes.

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