Tome of Hercules

Tome of Hercules is a Greek mythology-themed slot by Valkyrie with 5 reels, 5 rows and cluster pays mechanics. The game has an RTP of 96.7%, high volatility and a maximum win of 4,000x.

Symbols connect in groups of four or more to form winning clusters. When clusters clear, a cumulative counter tracks progress toward unlocking special effects at predetermined thresholds.

At 8 cleared symbols, two books spawn on the board. At 14 clears, two to three books spawn with a slash effect applied. At 27 clears, advanced book behaviour becomes available. At 42 clears, the bonus round activates.

Slash wilds clear the entire board and spawn books along a vertical or horizontal line, though the wild loses its effect if no connection forms after spawning. Consume wilds remove all symbols of a single selected type, and also lose their effect if no connection appears afterward.

Multiplier wilds add 2-5x multiplier value to their winning cluster. When multiple multiplier wilds occupy the same cluster, their values combine.

A Wild Square spawns at the start of each round, with an additional Wild Square having a chance to appear.

Reaching 42 cleared symbols awards 3 free spins. Every 3 additional clears beyond that threshold grants one more free spin, up to a maximum of 8 total. During the bonus round, a new board appears and wilds spawn when symbol connections end.

If all squares activate during the bonus round, the Cerberus Spin unlocks. A new board emerges and Cerberus drops onto a random reel, acting as a wild and tumbling downward until it reaches the bottom.