Mestarietsivä Basil Hiiri (Fin.) / Mästerdetektiven Basil Mus (Swe.) (English: "The Master-Detective Basil Mouse") is a board game based on the Walt Disney movie Basil the Great Mouse Detective. Players follow the footsteps of the great mouse detective through the streets of London as he chases Professor Ratigan and his gang. In the game players use numbered cards to travel from one corner of the board to another via roads and rotating crossroads. Crossroads can be used to hinder other players. The goal of the game is to get into Big Ben (Clock Tower / now: Elizabeth Tower) when the clock hits twelve o'clock.