A glitch, or error, refers to a temporary malfunction or irregularity in a system, often seen in technology and software. These issues can cause unexpected behavior, such as a program freezing or displaying incorrect information. Glitches can arise from coding mistakes, hardware failures, or conflicts between different software components. In video games, glitches can lead to unusual gameplay experiences, such as characters moving through walls or unexpected visual effects. While some players enjoy discovering these quirks, developers typically aim to fix glitches to ensure a smoother and more reliable user experience.