Grand Theft Auto 3 Snow Mod
Clips from GTA 3 in the snow.
UPDATE
You can get this mod for the PC version. It's called Schneemod. Try a Google search for the filename schneemod12.zip
It adds a bit of challenge to the game since you're sliding all over. All three boroughs of Liberty City are covered: Portland Island, Staunton Island, and Shoreside Vale.