While there isn't a single official "online" download link for a specific historical build, you can access the game through these official platforms:
: The modern version includes cross-play and official servers. If you are looking for the original 1996 experience, many fans use community "source ports" like QuakeSpasm or nQuake (popular for online QuakeWorld play), which require the original game's .pak data files. Download QUAKE Build 12022021 OnLine
: Offers a DRM-free version of the Quake Enhanced remaster. Important Notes While there isn't a single official "online" download