Installscript.vdf

"Registry"

C:\Program Files (x86)\Steam\steamapps\common\<GameName>\installscript.vdf Sometimes it resides in a subdirectory like _CommonRedist or directly in the game root. It is present for all games—only those requiring custom install logic. installscript.vdf

| Directive | Description | |-----------|-------------| | Run Process | Executes external processes. Can be nested. | | Registry | Creates/updates registry keys and values. | | FileMove / FileCopy | Moves or copies files after depot extraction. | | DeleteFile / DeleteFolder | Cleans temporary or obsolete files. | | RequireAdmin | Forces admin privileges for certain actions (Windows). | | WaitForProcess | Pauses until a launched process finishes. | | InstallScript root | Mandatory root object name. | Variable Substitutions: Steam replaces special placeholders at runtime: Can be nested

"Run Process" // optional block for pre/post-install commands "command_1" // e.g., "#SteamPath\\redist\\vcredist_x64.exe" "command_2" // e.g., "-quiet -norestart" "process_1" // array of commands to run sequentially "command" "#SteamPath\\some.exe" "parameters" "/S" "RunProcess" "command" "cmd.exe" "parameters" "/c echo Done > log.txt" "Registry" "HKEY_LOCAL_MACHINE\\SOFTWARE\\MyGame" "InstallPath" "#InstallPath" "Version" "1.0.0" "FileMove" "source" "temp\\data.dat" "dest" "game\\data.dat" | | DeleteFile / DeleteFolder | Cleans temporary