ALCHEMIST substitutes for all symbols except for PHILOSOPHER’S STONE. 3 or more scattered PHILOSOPHER’S STONES trigger 12 free games. Reel 5 features special win multipliers that multiply the line win, if they appear on the win line: during the base game 1 multiplier is active (x2, x3 or x5); during the free games all line wins are multiplied (x2, x3, x5, x10 or x20). Free games can be won again during the feature and are played at current bet.