Cheating in a video game does cause actual harm. And there are plenty of analogous actions that would be criminal in real life. For example if some dude came an

Cheating in a video game does cause actual harm. And there are plenty of analogous actions that would be criminal in real life. For example if some dude came and interfered with your tennis game every week, that would be harassment and probably trespassing, even if the only thing that person did was to interfere with your tennis game.