A Reel Multiplier is a unique system where a multiplier is not tied to a specific symbol or spot, but grows and is attached to an entire reel (vertical column).
If any symbol on that reel is part of a winning combination, the multiplier held by that reel is applied to the entire prize.
The core of this feature, which affects a wider area than a 'Positional Multiplier', is to provide a new kind of strategic fun where the player feels like they are 'growing the reel itself'.