Ninja Duel

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'.

Persistent Symbol is the most powerful and valuable top-tier special symbol found in 'Hold and Respin' bonus rounds. The core of this feature, unlike a regular special symbol (e.g., a Collector) that activates only 'once' upon appearing, is that it repeatedly performs its special ability on every single respin until the bonus round ends. This 'persistence' is what pushes the game's potential to its absolute limit.