They typically cannot access ServerScripts or server-side logic. This means a copied game will often have a working map but broken gameplay mechanics, as the core "brain" of the game remains hidden on Roblox’s servers. Legitimate vs. Unauthorized Copying
These scripts can usually pull the game's 3D environment (maps, parts), UI elements, and LocalScripts .
There is a major difference between using official tools and unauthorized scripts: Roblox Terms of Use
A game copier script (often referred to as a "Save Instance" script) is a piece of code typically run through a script executor to serialize game objects into a file format that Roblox Studio can read, such as .rbxl .
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