User Summary You take the role as the cat Zisa: You have to kill all the rats in the house, one room at the time: When all rats have been killed the door to the next level opens - but be aware of the spiders! They are poisonous! By carrying the dead rats to the trash can you will get bonus points. The game (shareware) was made by Ernst Friedman-Hill, who lived at Montezuma Street - while also gave name to his company.