Depths of Fortune starts on a 5-reel and 4-row setup that can expand up to 5 reels and 7 rows, creating up to 16,807 ways to win. Wins form by landing matching symbols across adjacent reels from left to right, triggering cascading symbols where winning combinations disappear to let new symbols drop down. The key gameplay element in the base game is the loaded reel positioned on the left side of the screen, which activates modifiers like wild symbols and low pay upgrades during cascades.

Reaching the hold and win bonus round unlocks extra multipliers, grid expansions, and colossal coins worth up to 5,000x per coin. The bonus uses a respins counter that resets whenever new coins land on the reels. With its medium volatility, this game delivers a balanced experience suited for players who enjoy feature-rich slots with gradual grid expansions and expanding winning potential.