Overwriting your original Assembly-CSharp.dll can cause "purple screens" or game crashes if the version doesn't match your game's build (e.g., using a Windows mod on a Linux build).
In Unity-based games, the Assembly-CSharp.dll file acts as the "brain" of the game, storing the primary gameplay source code and system-level functionality. Users often share these modified DLLs in .rar or .zip archives to distribute game mods, cheats, or bug fixes for games that lack official mod support. Common Uses for Assembly-CSharp Mods Assembly-CSharp-v2.rar
Adding custom timers, UI elements, or new mechanics to existing games. Overwriting your original Assembly-CSharp