You've braved the hazards of Colossal Cave and achieved the exalted rank of Adventurer Grandmaster. But more fabulous treasures await you in the adventure 550 expansion! Will you be the first to travel to the far side of the Volcano View, map the Ice Caverns, and defeat the Nasty-Looking Ogre? This expansion for Colossal Cave: The Board Game adds new puzzles, treasures and locations to the base game.