Schneemod
I think many of you remember the Schneemod for GTA3, which was finished a good while ago. It's the mod that turns the game into a winter season. The good news is that this mod is in the works for VC as well. This version will have nicer effects, there will be snow on the cars too, etc. According to the creators, it's due out today. Of course, it will be added to the site as well. :)
UPDATE
The mod will be around 160 MB, which the creators explain with the huge number of new textures (1400 of them).


