I think its a subset of bugs. A glitch usually is not fatal, allowing the program to continue in a possibly degraded/altered way. In games it most often refers

I think its a subset of bugs. A glitch usually is not fatal, allowing the program to continue in a possibly degraded/altered way. In games it most often refers to a bug that allows for some unintended behavior that may be advantageous for certain desired outcomes, although it also can be just a visual artifact or it could get you stuck. But I wouldn't expect it to be used to describe a bug that caused the game to shut down or end instantly.