Here's a guide how to play with an old cat.

1. Get a toy mouse and show it for the cat. For example place it on top on his head.
2. Hope he starts to play with the mouse.
3. Understand that the old cat thinks you're only a stupid human when you think he could play with the mouse.

Yeah, I took an video about that, the pic is a catshot from one. As the model I have an old man called Amigo.