Casino Industry Glossary
Expanding Reels
Slot Machines & Electronic GamingREPORTED
A feature where the reel grid expands during bonus rounds or special features, increasing ways to win.
In practice
Common in modern video slots.
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One entry from the Casino Industry Glossary, 1,090 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.