Microsoft has updated its Windows Store policies to disallow the availability of emulators through the store. The news comes as the Twitter account for NESBox, who made the free Universal Emulator, announced the program had been removed from the store.
— NESBOX (@nesboxcom) April 4, 2017
The additional reference to emulators appears on the Windows Store Policies on MSDN.
Apps that emulate a game system are not allowed on any device family.
The decision means that emulators will no longer be able to be sold or made available through the store for Windows 10 (via the Store), Windows Phone and Tablets or Xbox One.
We are surprised it has taken this long to be put into force with Windows Phone store being filled with emulators and Pokémon games from the GameBoy Advance.
Universal Emulator was able to emulate NES, SNES, SEGA Mega Drive, GameBoy Color, and GameBoy Advanced. While it is no longer available to download through the Windows Store, you can get it through other means.