Fire Souls

Fire Souls appear in Sonic and the Secret Rings as collectible items. They are similiar to Red Star Rings from Sonic Colours and Sonic Generations.

They are found in Adventure Mode are used for unlocking new attractions, mini-games and characters for Party Mode. Here's a list of all the unlockables that can be found in this mode (in the order you unlock them):

Mini-Game #22: Aim! Big CrossbowMini-Game #28: Sink 'em! Pirate ShipMini-Game #12: Row! Canoe RaceMini-Game #29: Reel! Battle FishingNew Character: Shadow the HedgehogMini-Game #30: Thrust! Bone KnightNew Character: Cream the RabbitMini-Game #31: Cross! Balance RaceMini-Game #37: Watch out! TrapMini-Game #32: Put it out! Big FireNew Attraction: World BazaarMini-Game #33: Fly! Ptero-RiderNew Character: Silver the HedgehogMini-Game #34: Spin! Propeller RaceNew Character: Blaze the CatNew Option: Extreme DifficultyNew Attraction: Final Adventure