!!!(Misophonia warning)!!! You feed and give nyan cat milk. Click on the milk and food to give him numnums. click on the brush to clean nyancat. (move him to the center of the floor for it to look right) Edit: I forgot to mention that you can use the arrow keys to move him around, and clicking on him lets him sleep. If you don't put the cat to sleep, it will eventually fall asleep on its own.