Play by P2P

[Sivran]

Or perhaps more simply, emule can do the same thing, easier.

Someone only need run an ed2k server (not even necessary really) and publish ed2k links for the savegame file(s). Anyone with emule could then click the link (or copy to clipboard) and emule would take over from there, grabbing the file from as many sources have even a piece of it and dropping it whereever the user specifies, like the \savegame directory, for example.

The torrent I think is actually more complicated.

Caveat: ANY p2p works better with its appropriate ports forwarded. Some users may not be able to do this for various reasons.