Part I: Games & Gaming · Slot Machines & Electronic Gaming

Cluster Pays Slot

Slot Types

A slot game that eliminates traditional paylines entirely, instead awarding wins when groups (clusters) of matching symbols appear adjacent to each other horizontally and/or vertically on the reel grid. Typically, a minimum cluster size (often 5-9 symbols) is required for a payout. Cluster pays mechanics frequently pair with cascading or tumbling reels, where winning symbols disappear and new symbols fall into place, potentially creating chain reactions of wins from a single spin. This format is particularly suited to larger grid layouts (e.g., 7x7 or 8x8).

In practice

Popularized by NetEnt’s “Aloha! Cluster Pays.” Particularly common in online/mobile gaming but increasingly appearing on land-based video slots.

One entry from the Casino Industry Glossary — 1,157 terms written for surveillance, compliance and operations professionals rather than for players. Definitions describe industry usage; where a term carries a regulatory meaning, verify against the instrument that governs your jurisdiction.