Completion of each difficulty level unlocks additional rewards. Winning some minigames unlocks more challenging modes. Earning experience unlocks and augments abilities, making the hero more powerful. This also unlocks special abilities for the characters. Baikinman unlocks some dark secret and controls a weapon or monster able to polymorph people. The player unlocks several bonuses for completing the game. Completing the game unlocks downloadable concept art. The gang realizes that there is another exit that Scooby unlocks. Susan leads him on an adventure that unlocks family secrets laid buried for generations. PTH is "a key that unlocks the bank vault" to remove the calcium. Pat finally unlocks the doors and windows, freeing them, and shuts herself down. The access control system unlocks doors as necessary. Under her tutelage, Antonio unlocks the secrets of words. The Serjeant then unlocks the doors. Additionally, in these games collecting puzzle pieces unlocks artwork from the games.