Garry’s Mod, commonly known as GMod, is a physics sandbox game that became a cornerstone of internet culture after its 2004 release. Utilizing Valve's Source engine, it allowed users to manipulate characters and objects in surreal ways, giving birth to iconic internet subcultures like GMod machinima and 'Nextbots.' The meme aesthetic is defined by its glitchy physics, the floating red 'ERROR' models that appear when assets are missing, and the notorious pink-and-black 'Missing Texture' checkerboard. These elements are frequently used to represent technical chaos, social awkwardness, or the nostalgic, uncanny humor of early 2000s PC gaming.