Diamonds XXL MultiBoost Slot Game

Stack sticky Multiboost factors on Diamonds XXL MultiBoost, a 3-reel gem slot with Hold and Win, multipliers up to 20x, and a Grand prize of 1,000x.

What Is Diamonds XXL MultiBoost Slot?

Diamonds XXL MultiBoost is an online slot on a 3x5 grid with 15 winlines. The grid is a tall diamond cabinet. Red sevens, bells, card suits, and cut gems sit on the reels beside Feature diamonds, jackpot tiers, and Multiboost symbols.

The Feature Game is the main engine behind rewards. It can be triggered directly, or opened through the Multiboost Feature or Boost Feature when a Multiboost or Boost symbol lands together with a Feature or Jackpot symbol.

Landing a Multiboost with a Feature symbol collects every visible Feature and Jackpot value on the board and multiplies the total by a random factor. In the Feature Game, Multiboost has a chance to retrigger additional random multipliers.

A Multiboost symbol can multiply collected values up to 20x. Extra Feature Game can fire in the base game, adding Feature, Boost, and/or Multiboost symbols in a quantity sufficient to activate the Feature Game.

There are 4 jackpots on the diamond tiers, and the biggest of them (Grand) is worth 1,000x your spin.

How Do You Win on Diamonds XXL MultiBoost?

Feature Values

Feature symbols can carry a cash value or a jackpot tier. A Multiboost symbol on the center reel is the usual partner that starts a collection.

In the base game, a Multiboost symbol gathers every visible Feature and Jackpot symbol on the board and multiplies the collected total by a random multiplier. If enough Feature, Boost, and Multiboost symbols land together, the Feature Game is triggered instead.

Regular diamond values sit between 1x and 8x. Jackpot-tier diamonds are labeled Mini, Minor, Major, or Grand.

Multiboost

Multiboost is the collector and the multiplier. It appears on reel 2 only.

When a Multiboost symbol lands in combination with any Feature symbol, it triggers the Multiboost Feature: it collects the values of all Feature and Jackpot symbols on the board and multiplies that total by a random multiplier from the range x2, x3, x5, x7, x10, x15, or x20. The result is added to the win for the current spin (in the Main Game) or to the Total Win (in the Feature Game).

During the Main Game, whenever a Feature or Jackpot symbol lands without a Multiboost present, a Multiboost may be randomly added to reel 2, either activating the Multiboost Feature or triggering the Feature Game. In the Feature Game, Multiboost has a chance to retrigger additional random multipliers.

Boost Feature

A separate Boost symbol also appears on reel 2 only. A Boost or Multiboost symbol landing in combination with any Feature or Jackpot symbol triggers the Boost Feature, which gathers all Feature and Jackpot symbols on the board.

Extra Feature Game

Any Feature symbol landing during the Main Game grants a chance to trigger the Extra Feature Game, which adds Feature, Boost, and/or Multiboost symbols in a quantity sufficient to activate the Feature Game.

Jackpots

There are four fixed prize tiers:

Mini = 15x
Minor = 30x
Major = 100x
Grand = 1,000x

Extra Chance

Two optional modifiers are available (only one active at a time, and only when Play Feature is not in use):

Double Chance: costs 1.5x the spin Size; doubles the chance of triggering the Feature Game.
Boosted Spin: costs 5x the spin size; guarantees a Boost or Multiboost symbol appearance and triples the chance of triggering the Feature Game.

Players can also access the bonus round directly at the current spin size.

Why Play Diamonds XXL MultiBoost Online Slot?

Diamonds XXL MultiBoost does a great job of mixing the diamond theme with a collect mechanic. The 3x5 grid has enough space for 15 symbols, more than the standard 9 from a 3x3 grid. Fifteen winlines keep you in play while you wait for a Multiboost and more.

Multiboost multiplying up to 20x is the highlight. Landing a Multiboost with any Feature symbol triggers the Multiboost Feature, collecting every visible Feature and Jackpot value on the board and multiplying the total by a random factor (x2, x3, x5, x7, x10, x15, or x20).

In the Feature Game, Multiboost can retrigger additional random multipliers, so more than one boost can land in a single bonus round.

The Extra Feature Game gives the base game a second door into the Feature Game: any Feature symbol landing on the reels grants a chance to add enough Feature, Boost, and Multiboost symbols to activate it outright. Grand is 1,000x on a jackpot tier, a respectable goal on its own.

Volatility and RTP figures may change. The values listed were accurate at the time of writing. Please check the game's info panel for the latest details.

When Was Diamonds XXL MultiBoost Online Slot Game Released?

Diamonds XXL MultiBoost was released by Enjoy Gaming in October 2026.

What Is the Maximum Win on Diamonds XXL MultiBoost Online Slot Machine?

The published Grand prize on Diamonds XXL MultiBoost is 2,404x your spin.

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Looking for More Games Like Diamonds XXL MultiBoost? Here Are a Few!

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Energy Coins Hold and Win: Coin locks, four jackpot tiers, and a 10,016x ceiling.
Hit More Gold: Boost collects on nugget symbols plus Mini through Grand tiers.

If you enjoy the collect-and-multiply style of Diamonds XXL MultiBoost, you may also want to browse SpinBlitz's Hold and Win category for other games built around locking symbols and respins. You can also filter by medium volatility to find titles with a similar profile.