Dealing with compressed game files like UNDERTALE.ZIP is a common step for installing mods or managing older versions of the game. While the official Steam version usually handles installation automatically, zip files are frequently used for , fan-made mods , and cross-platform ports . Core Extraction and Installation
To use a game provided in a .zip or .7z format, you must first extract the contents to a folder on your computer. How To Install UnderTale | Tutorial | KarmaTastic DOWNLOAD FILE – UNDERTALE.ZIP