Last updated: 6 September 2026
01 / U88 GUIDE
What is the difference between a wild and a scatter symbol on a slot?
The wild is a substitute. Land two matching symbols and a wild on a valid payline, and the wild becomes the third symbol, turning a dead spin into a paying one. That is the entire concept, and everything else built on top of it is a variation on how long the wild sticks around or how much it multiplies.
One consistent limitation catches people out: a wild almost never substitutes for a scatter or a bonus symbol. Two scatters and a wild is two scatters. The paytable states this explicitly, usually in a line most players scroll past.
Some games also restrict wilds to certain reels, commonly the middle three. Others let wilds pay a prize of their own when several land together. Both details sit in the game info screen alongside the payline rules covered on slot paylines.
02 / U88 GUIDE
The wild variants differ mainly in how long the symbol stays useful
| Wild type | Behaviour |
|---|---|
| Standard | Substitutes on the position it lands, for that spin only |
| Expanding | Grows to cover the full reel, turning every position on it wild |
| Sticky | Locks in place for a set number of subsequent spins |
| Walking | Shifts one reel across per spin, usually with a respin each time |
| Stacked | Arrives as a block of several wilds filling part or all of a reel |
| Multiplier | Applies a multiplier to any win the wild helps complete |
Sticky and walking wilds are the ones that produce sequences rather than single wins, since they persist while fresh symbols land around them. Stacked wilds are the reason a five-of-a-kind occasionally arrives out of nowhere on an otherwise quiet game.
03 / U88 GUIDE
A scatter pays from anywhere because it ignores the payline rules
Normal symbols must sit on a defined path, or on adjacent reels from the left, depending on the format. Scatters are exempt. Three scatters anywhere on the grid count as three scatters, whether they are bunched in a corner or spread across opposite ends. That exemption is the whole definition.
Most scatters do two jobs. They pay a multiple of the total bet rather than the line bet, which is why a scatter payout is calculated differently from everything else on the paytable. And they trigger the feature, which is usually free spins.
04 / U88 GUIDE
Three scatters is the standard free spins trigger
The convention across most video slots is three scatters for the base award, with four or five granting more spins or a better version of the round. Some games add a retrigger, where scatters landing during free spins extend the round. Others use a separate bonus symbol on specific reels instead.
Because so much of a modern slot payout sits inside that feature, scatter frequency is one of the biggest drivers of how a game feels to play, which is the mechanism explained on slot volatility. Formats such as Megaways lean on it especially hard.
Neither wilds nor scatters improve your odds beyond what the paytable already accounts for. They are how a game distributes its return, not additions on top of it. Read the info screen before staking, and treat any slot games session as paid entertainment with a budget set in advance. Players must be 18 or over.
KEY TAKEAWAYS
What to remember
- A wild substitutes for regular paying symbols to complete a win, but almost never substitutes for scatter or bonus symbols.
- A scatter pays from any position on the grid because it is exempt from the payline and adjacency rules that govern normal symbols.
- Three scatters is the most common free spins trigger, with four or five usually awarding more spins.
- Wild variants include expanding, sticky, walking, stacked and multiplier wilds, each changing how long the wild stays useful.
- Some wilds carry a multiplier that applies to any win they complete, which is where large base-game hits usually come from.
- Neither symbol type changes a game long-run return. Both are already priced into the paytable the studio published.