Grid slots explained: how grid slot mechanics work?

Grid slots are a popular type of slot that uses a large grid in place of classic reels and rows. We love to explore different setups, features, and themes here at 1spin4win, which is why we offer everything from slots without paylines like Mega Cash Amplifier to ones with over 1,000 paylines, like Very Lucky 1024.

Grid slots are one of several unique creations that developers use to put their spin on modern slots. In this guide, we’ll look at everything from the layout and basic game format to in-game mechanics and features to see how these games differ from other slots.

What are grid slots?

Typically, a grid slot features a large grid ranging from 5x5 to 8x8, but there are also variants that create more unique layouts, such as 6x12. They differ from classic slots in that they don’t use traditional rows and spinning reels. Instead, the symbols fall into place on the grid, and wins often form via a mechanic known as Cluster Pays.

Combinations typically appear as connected clusters (horizontal or vertical) rather than in strict paylines. Winning combinations may then explode to make way for new symbols, a feature commonly known as Cascading Reels, but also as Tumbling Reels and Avalanche.

This unique grid of symbols gives grid slots a distinctive appeal, but it’s the features that bring them to life. It’s no wonder that they’ve become so popular among slot fans, with many developers now creating their own versions and adding their own slant.

How do grid slots compare to traditional reel slots?

Whether it’s reels vs grids, payout mechanics, or feature triggers, there are many differences between grid slots and traditional slots. To better understand how these two slot types compare, let’s compare a classic reel slot game like the 256-payline Lucky Goal slot with a typical Cascading Reels grid slot:

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Despite these differences, these game types use similar random number generators (RNGs) to determine outcomes and may offer a similar return to player (RTP) percentage. They also come in various styles and sizes, with providers varying the visuals, themes, and styles to offer a distinctive slot experience every time.

Common layouts in grid slots

The slot grid configuration is often the biggest determining factor in a grid slot. Ranging from 5x5 and beyond, grid sizes determine the number of symbols. It also impacts the matches needed for a winning combination, with bigger grids often requiring a larger number of matching symbols.

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How a grid slot works

To understand how grid slot machine games work, let’s look at typical grid slot gameplay from start to finish:

The symbols fall into place

A grid slot’s layout is usually empty when the game begins. Once the player hits the “play” button, a mixture of symbols falls down from above to fill the grid.

Clusters form

Grid slots use a “Cluster Pays” mechanic. Rather than catching three or more matching symbols across an active payline, it returns payouts when a specific number (usually 5) of matching symbols cluster together. 

As long as symbols of the same type are horizontally or vertically connected, they are considered part of the cluster. Some slots also count connections that form diagonally, while others use a Pay Anywhere system that pays as long as the required number of matching symbols are on the grid, regardless of whether they are connected or not.

Cascading Reels removes winning symbols

Once the game highlights all current winning combinations, it removes them from the grid. The symbols above fall into the empty spaces vacated by these winning symbols, and new symbols also fall into the grid from above.

The Cluster Pays mechanic does its thing again, and if more clusters form, the same thing happens again. The game can keep going in this manner until there are no winning combinations on the grid.

Additional features trigger

Grid slots, like reel slots, may include bonuses like free spins and bonus games. They can also include wilds, which substitute for other symbols; multipliers to boost payouts; bombs to explode symbols not in winning combinations; and mystery symbols, which transform into other symbols at random.

The developer may also add fixed jackpots and progressive jackpots.

Features commonly found in grid slots

Cluster Pays and Cascading Reels are probably the two most common features in grid slots. They are strong, fundamental slot mechanics that elevate every spin and make the base game feel like a bonus round. But there are many more features out there, and these can also kick in during the base game.

For example, the grid layout and overall gameplay experience may expand with features such as:

• Blockers: A blocker is an inactive space on the game grid. Once destroyed, usually by landing specific symbols or scoring winning combinations, it disappears and creates more space on the grid.
• Expanding grid: The grid may expand outwards, adding more sections and allowing for extra symbols. This often occurs after a fixed number of payouts, with the grid then resetting when there are no more combinations.
• Multipliers and progressive multipliers: Multipliers can appear as symbols that drop alongside main game symbols or as progressive multipliers that increase in line with the total successive combinations.
• Free spins and bonus rounds: After hitting a certain number of successive payouts or landing enough scatter/bonus symbols, the player may trigger a free spins round or bonus game feature.

Why are grid slots so popular in online casinos?

Players love innovative mechanics, and by offering an experience that’s completely different from traditional slot games, that’s exactly what grid slots provide. They’re unique, but they’re also dynamic, with a constantly shifting grid.

It’s engaging, and that’s great news for casino operators. Modern game design and engaging gameplay can improve replayability and retention rates. Grid slots can also stand out from the many reel-based slots released every week. Even though grids are becoming more common, they’re still outnumbered by traditional reel setups.

Grid slots are also just as varied as their traditional counterparts, offering flexible mathematics and easier promotional tie-ins.

Of course, all of that hinges on the iGaming studio and the specific slot game development process. However, by working with trusted studios and selecting the best slot games, operators can provide their players with a wide range of grid slots that could enhance key metrics like customer acquisition and player retention.

Why iGaming providers create grid slots

Grid slots are very different to traditional reel slots. They may be more complicated to develop, especially if it’s the provider’s first foray into this type of slot game. So, with all of that in mind, why do iGaming providers create these games?

Giving players the games they want to play

Developers have a lot of data at their disposal. They’re constantly researching the market, checking in with casinos and players, and learning what sort of games slot fans enjoy. In recent years, there has been a clear grid slot trend, with more players drawn to these unique and dynamic creations.

In creating grid slots, developers know they can appeal to a large audience, one that’s not only familiar with grid slots, but is always on the lookout for the next big release. 

They can incorporate various unique features and mechanics

Classic 3-reel slots can be limited in terms of features and iGaming mechanics. Developers can add wilds and even free spins, but with a limited range of symbols, there’s a limit to what they can do.

The same is true for 5-reel slots. There’s a lot more room, but with fixed paylines and a focus on classic mechanics, there’s still a limit.

Grid slots also have limits, but they allow for various features not commonly found in traditional reel slots. 

Portfolio diversification

Most developers already have a wide selection of 3-reel slots and 5-reel slots in their portfolio. These games may include everything from classic, retro-styled slots like Retro Fruits 243 Fortune to stylish themed slots like Lucky Hercules Hold and Win. A developer may also license the Megaways feature to create Megaways slots or try their hand at branded slots.

But their roster wouldn’t be complete without jumping on the grid slot trend. A diversified portfolio puts the development team to the test and could help them discover a new direction, unlock new trends, or find new mechanics. More importantly, it looks better to casino operators, as they ultimately want a wider variety of slots so they can appeal to all types of players.

Example grid slot machines from 1spin4win

1spin4win has a fantastic selection of slot titles, and while many of these use classic themes and features, giving players a shot of nostalgia every time they spin the reels, some don’t use any paylines at all.

These grid-like slot games include Hold the Gold Fortune, which packs two fixed jackpots and many payout opportunities into a 3x3 grid; Mega Cash the Gold, which uses only coin symbols and multipliers on a 5x3 grid; and Cash the Gold Hold and Win, which features multipliers worth up to 50x, as well as a Hold and Win respin round.

We are constantly developing and innovating, so keep an eye on our games page to see the latest releases as soon as they become available.

Conclusion: How do grid slots work?

Grid slots can be a key consideration during slot games integration. Operators want the best developers and the best slots, but they also need variety. At 1spin4win, we are constantly working on new titles, ensuring we have a diversified portfolio and release new games for players to enjoy.

Grid slots are hugely popular right now, but for operators, they are just one piece of the puzzle. Sure, some players may prefer these slots, but others are looking for a more traditional gaming experience. 

The rise of payline-heavy mechanics has coincided with a return to form for simpler retro slots, proving that there is no single preferred slot type. Every player has their own preferences, and a good casino is one that caters to all of these preferences.

FAQ

What are grid slot games?

Grid slots are slot games that feature large grids instead of classic rows and reels. They may also use Cluster Pays.

How do grid slots work?

The mechanics can vary, but many grid slot games use Cluster Pays and Cascading Reels. Wins form as a “cluster” of matching symbols, with winning symbols then disappearing as new ones fall down.

What’s the difference between reel slots and grid slots?

Reel slots spin fixed reels, while grid slots drop symbols into a large empty grid and typically pay for clusters of matches.

What are the most common layouts in grid slots?

The 5x5 layout is the most common, but grid slots can come in many shapes and sizes, including substantial 8x8 grids.

Are there any paylines in grid slots?

There are typically no paylines in grid slots, as they don’t use reels like in 3-reel and 5-reel slot games. Instead, they utilize mechanics such as “Cluster Pays”.

Can Megaways and other mechanics be included in grid slots?

It depends on the slot, as Megaways relies on a large number of reels and randomized rows. However, it can work.