About w3v file...

Is there a way to convert a w3v(game cache) into a text then convert it back? It could be useful for management of the cache.

BTW, cache work by folder called category, in those category you find the label(your saved file).

anyway, would be nice if someone make a small program(like for the convert mdx <-> mdl program) for this.

Game caches are compressed. You can unpack them using my unpacker tool (it is here on w3c somewhere). After that you will need to discover how that cache works, coz my tool will only unpack them, I don´t know the w3 cache file structure.