If you already own a legal copy and just want a smaller download/install, search for on reputable modding forums like Nexus Mods or Reddit’s r/oblivion.
: Extreme compression requires significant CPU power and time (sometimes hours) to decompress the files onto your drive [8]. Security Risks elder scrolls oblivion highly compressed download link
Before searching for a download link, consider these factors: If you already own a legal copy and
Many compressed links use old versions of the game that lack critical engine fixes or compatibility for modern hardware. Why "File Size" is Less of an Issue Now Why "File Size" is Less of an Issue
If you are looking for a "piece" of information or a specific mod to reduce the game's size for hardware reasons, you might want to look into low-resolution texture packs Nexus Mods
Often cited as the best version for modern PCs, the Oblivion GOG Version