A is a maliciously crafted duplication file designed to exploit a vulnerability in the server’s prop spawning, constraint system, or Lua execution environment. When spawned, instead of creating a cool base, it triggers a cascade failure: the server lags, freezes, crashes, or becomes permanently unresponsive.

Dupes containing thousands of props welded together in a "lag machine" configuration can cause the server's physics engine (PhysX) to hang while trying to calculate collisions.

Certain dupes exploit bugs in popular tools like Advanced Duplicator 2 or Wiremod . For instance, a recent Wiremod update reportedly caused servers to crash when certain dupes were saved or loaded .

Restrict the maximum number of props, ragdolls, and effects a player can spawn at one time.

The easiest way to stop massive physics dupes is to restrict what a player can spawn at any given time. Set sbox_maxprops to a reasonable limit (e.g., 50 to 100).

In GMod, a dupe is a saved file containing the data of a collection of props, constraints, and entities. When a player "pastes" a dupe, the server must instantly calculate the placement, physics, and interactions of every object within that file. Characteristics of a Crasher Dupe

Malicious files may contain corrupted data that floods the server’s networking channel, causing all connected players to time out. Prevention and Mitigation for Server Owners

Often looks like a single small prop but contains hidden data that expands into a server-killing cluster upon being "unfrozen."

Corrupted text files that attempt to force the server to execute broken Lua strings, loop infinitely, or call missing dependencies, resulting in a hard crash. The Impact on Server Communities

: Many servers replace the default duplicator with AdvDupe2 because it spawns items gradually rather than all at once, which reduces server-killing lag spikes.

Many older crash dupes rely on bugs patched in 2020–2022. If you’re still on GMod version from 2018, you’re a target.

Some advanced crasher dupes exploit Garry's Mod's networking protocol. They use heavily modified Lua scripts embedded within the dupe's metadata. When the server attempts to replicate this corrupted string data to all connected clients, it blows past the network buffer limits, immediately disconnecting the entire player base. The Impact on Community Servers

error: Content is protected !!