To trigger the free spins bonus round in Big Bass Bonanza, players will need to and three, four, or five scatter symbols on the reels. Depending on the number of scatters which land in the free spins round, the slot will award 10, 15, or 20 free spins as a starting point. During this feature, a fisherman wild is added, which acts as a regular wild symbol, and also has a special power. There is also the chance to see more fish symbols land on the reels.