You can now play Witch n' Wiz on the Super Nintendo thanks to Project-NESted (https://github.com/Myself086/Project-Nested). 

This is not an upgrade to 16-bit graphics or sound though. Instead it is simply the NES game running in an emulator written for the SNES. This is useful for people who, for example, own a SNES Everdrive but not a NES one, and want to play Witch n' Wiz on their TV.

The SNES ROM is available to download by anyone who has purchased Witch n' Wiz here on Itch.