Reels, rows, paylines and ways: the vocabulary

Geometry comes first

A reel is a vertical strip or column in the displayed arrangement. A row describes a horizontal level of positions. Five reels and three rows describe fifteen visible positions, but those numbers do not tell you which arrangements pay. The Dog House is a useful concrete example because the provider separately states its five-by-three display and twenty lines.

A grid may instead be described by width and height. Gemix uses seven by seven. That tells you where symbols can appear, while the cluster rule tells you how they must connect. Counting positions is not counting paid patterns.

A line is a prescribed path

A payline is a pattern of positions used to evaluate combinations. To read a line game, find the diagram and its direction and qualification rules. Do not assume every visible group of matching symbols belongs to a paying path.

Variable reel games introduce another distinction: the number of visible positions and potential combinations can change. The Dog House Megaways is documented separately from the fixed-line original. A large advertised combinations figure should not be compared with a line count as if the two numbers measured the probability of a win.

Count-anywhere and adjoining clusters

Sweet Bonanza counts matching symbols anywhere in the area; the source describes awards beginning at eight. Gemix asks for five or more matching symbols touching horizontally or vertically. These rules cannot be substituted for one another.

When reading an unfamiliar game, write down three things: the minimum qualifying group, whether positions must connect, and what happens after a group wins. That short description tells you more about evaluation than the theme, the number of symbols or a large marketing headline.

Reference examples

• The Dog House — A fixed line game with a change in wild persistence
• Sweet Bonanza — Counting matching symbols is different from tracing a line
• Gemix — The cluster rule and the world pattern are separate tasks

Provider pages support their named examples. Gambling Commission materials concern Great Britain and are used here for definitions and documentation context, without a worldwide legal claim.