Have you ever wanted a snow theme in SMM? Well, now you have one.
~ BMatSantos: SMBX tileset
~ NightYoshi370: Audjusted it for SMM 3DS
~ Explos: Added snow to the mushroom platforms
~ Hüseyin der Mächtige: Did the pipes and Semisolids.
Download link: http://mariomods.net/downloads/packs/3DS-SMW-Snow.zip
While you are at it, you should also check out all the other SMM hacks
that we have made.