Players take on the role of cat burglars and use a simultaneous bidding mechanism similar to Raj/Hols de Geier to get cards that allow them to move up a skyscraper. However, the game system does add several new features to the genre such as sabotage, stealing equipment, and unique 'parasite' cards. In addition, the unique 3-d board is modular to allow for different difficulties and game lengths. - BoardGameGeek