I don't know why, but I'm scared of sudden video game glitches. Is that normal? Is there a phobia for that?

Not yet. Anxiety reactions can occur to sudden, unexpected changes in our environment, including the immersive environments of video games. As of yet there aren't any specific connections between disorders and videogames. Internet addicts (including gamers) will report anxiety symptoms and withdrawals from online time. But specific phobias are not connected to any video or online behaviors.