As web technologies change (like the death of Adobe Flash), many older interactive files on WMM become unplayable. A siterip often includes standalone versions that can be played offline.
Over the years, the site's infrastructure, hosting terms, and availability have fluctuated. This shifting availability is precisely why archiving efforts and "siterips" became highly sought after within the community. Anatomy of a "Complete Siterip" warpmymind com complete siterip top