Online Slots With Stacked Wilds | Stacked Wild Slot Games

Trying out online slot games in the UK can seem confusing at first, especially when you come across new terms and features. One of these features, called “stacked wilds,” has become very common amongst online slots.

If you are curious about what stacked wilds really are and why they appear in some slots, this guide will break it down. 

Read on if you would like to know how stacked wilds fit into different slot games or if you want to make sense of the features you’ve seen in online casinos.

A photo of a slot machine inside a casino.


How Do Stacked Wilds Work in Online Slots?

A stacked wild is a special symbol that can fill more than one space on a single reel. You may see it cover two, three, or more positions vertically. Depending on the game, a stacked wild might show up across an entire reel or just part of it.

Stacked wilds act as substitutes for most other symbols, making it easier to complete matching lines. When several wilds are stacked, it is possible to create more chances for these combinations.

The number of spaces a stacked wild covers depends on the slot. In some games, wilds may take up the whole reel, while in others they only fill a couple of spaces. You can find the details about wilds for each game by checking the paytable or rules section.

Slot games always operate randomly. The outcome of each spin cannot be predicted, and game features may differ from one casino to another. For this reason, it might be worth checking the rules or game guides before you potentially place a bet.

Best Stacked Wild Slot Games

Many UK slot games now include stacked wilds as a core feature. They span a range of styles and themes, so there is likely to be something for every preference. Popular examples are Starburst by NetEnt, Gonzo’s Quest Megaways by Red Tiger, and Book of Dead by Play’n GO. These all showcase stacked wilds, either during the base game or in bonus rounds.

Each slot is unique and might include other features, such as Megaways reels, cascading symbols, and expanding wilds. For instance, Starburst’s stacked wilds stick for an extra spin, while Gonzo’s Quest Megaways has avalanche reels and its own wild features. You will find themes ranging from ancient history to modern adventures or classic fruit designs.

Another element players might want to consider when choosing a slot is the Return to Player (RTP) percentage, detailed in the paytable. UK slots usually display this information clearly, and figures often sit between 94% and 97%. RTP shows the theoretical return to players over time.

Since all slot outcomes are generated by Random Number Generators (RNGs), there are no guarantees around when stacked wilds will show or how they will affect a session. Players should always remember to gamble responsibly and within their means- never wager more than you can afford to lose. 

Stacked vs Sticky Wilds: What’s The Difference?

While stacked wilds are a symbol that covers multiple spaces on a reel, sticky wilds behave differently. Sticky wilds stay stuck in place for one or more spins, rather than spinning away with the other symbols. You will often come across sticky wilds during bonus features, where they remain in their positions as other symbols move.

Both wild types can add something different to slot gameplay. Every game will have its own set of rules explaining exactly how the wilds work, so it could  help to review the paytable or information section to understand their differences.

As with everything else in slots, the arrival of wilds is completely random. If you want to see the difference between these features, trying out a mix of games that use stacked or sticky wilds could be a practical way to learn more.

Play Slots With Stacked Wilds at O’Reels Casino

O’Reels Casino has a wide collection of slots featuring stacked wilds, as well as other features like cascading reels and Megaways options. Each game includes clear RTP and volatility information, all clearly displayed in the paytable for your convenience.

You can browse the site for different styles—from classic fruit slots to specific themes—and get all the details about how wilds and bonuses work direct from each game’s information screen. 

Results at O’Reels are decided completely at random by the games’ RNGs, in line with strict UK Gambling Commission (UKGC) standards. All players have the choice to set deposit limits, helping to keep within safe boundaries. 

Always remember to gamble responsibly and within your means. 

**The information provided in this blog is intended for educational purposes and should not be construed as betting advice or a guarantee of success. Always gamble responsibly.

*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to these slot games are subject to change at any time. Game features mentioned may not be available in some jurisdictions.