Buffalo Thunderstorm

Reel Expansion is a feature where the physical size of the game grid (reels or rows) actually gets bigger, typically upon entering a bonus round like free spins. This goes beyond simply adding a multiplier; it aims to expand the 'board' of the game itself, providing players with a wider field of opportunity and fundamentally increasing the number of winning ways.

Growing Symbol is a highly visual, progressive feature, primarily used in bonus rounds like free spins, where thephysical size of a designated special symbol (usually a wild) progressively increases (e.g., 1x1 → 2x2 → 3x3) each time a specific condition is met. The core of this feature, unlike a 'Growth Multiplier' where a number increases, is that the'size' of the symbol itself gets bigger. This clearly shows the player that the bonus round's potential is strengthening and makes them anticipate the explosive rewards upon reaching the final stage.