: Click the Install button. Ensure you have at least 42 GB of free disk space (SSD recommended for faster loading).
: Once the download completes, click Play to start the game. Workshop Content Installation (GOG Version) serious-sam-4-installation-tutorial
: Buy the game on your preferred storefront (e.g., Steam or GOG ). Once purchased, it will appear in your "Library." : Click the Install button
Since GOG doesn't have a built-in Workshop like Steam, you can use the WorkshopDL tool to install mods manually: Workshop Content Installation (GOG Version) : Buy the
: Paste the Steam Workshop URL into the tool and click Download .
: If you're looking for an easier time unlocking achievements or just want to enjoy the story, start on Tourist difficulty .
: Launch the program and allow it to download SteamCMD if prompted.