These dupes are — they can:

If you’ve spent any time on DarkRP, Sandbox, StarWarsRP, or TTT servers, you’ve probably heard the term whispered in Discord servers or seen a popup warning: “Do not spawn crasher dupes. Instant ban.” But what exactly is a crasher dupe? How does it work? And why, despite years of patches, do they still exist?

has been a sandbox phenomenon for nearly two decades. Its flexibility—allowing players to spawn props, weld constraints, create contraptions, and run Lua scripts—is its greatest strength. Unfortunately, that same flexibility creates one of the most persistent plagues in the game’s history: the “Server Crasher Dupe.”

GMOD server administrators who fail to protect their servers against the GMOD Server Crasher Dupe may face a range of consequences, including:

If you’re tempted to crash a server because an admin abused you, or because you think it’s funny, consider the following: