The Greatest Catch Bonus Buy features a standard reel setup with 10 active paylines. Players land matching symbols across these lines to form winning combinations in the base game. The visuals focus on a tranquil fishing pond where the main goal is to land scatter symbols to initiate the bonus round.

The bonus round is triggered by landing 3 or more scatter symbols or by using the bonus buy function. During free spins, wild symbols collect buoys to increase multipliers and award additional spins.