7 Pots of Ra: Hold and Win

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.

A Feature Upgrade is a very special 'meta' feature that, rather than paying out winnings itself or directly affecting other symbols, enhances another special feature symbol (e.g., Collector, Payer) already on the reels to a more powerful 'Persistent' version. The core of this feature is to change the 'nature' of other special symbols that determine the potential of the bonus round, instantly transforming what could have been an average bonus into a round where one can expect the Max Win.