How do you exit the Cateroid game?

[Judge Holden]

I found the coin, entered the Cateroid stage, found all the cats there, got the message that I'd received a battery and got the achievement, then ... nothing. I'm stuck staring at the Cateroid screen with nothing to find and no way I can see to exit. Had to quit the game, but then when I restarted the level I started with the coin still stuck to my mouse pointer, so I had to enter the Cateroid machine again, and same thing, all cats found but no way to proceed.

[lilydevcats]

Hello human!
You can use the right mouse button to exit. Taking the coin does not prevent you from continuing to find cats in the main room of the stages.