Skip to main content

On Sale: GamesAssetsToolsTabletopComics
Indie game storeFree gamesFun gamesHorror games
Game developmentAssetsComics
SalesBundles
Jobs
TagsGame Engines

It seems like John NESS doesn't support mapper 30, which is used by a lot of aftermarket NES games (including Zed and Zee).  I tried that emulator with another mapper 30 game and received the error you described.

RetroArch is free on the Google Play Store and includes multiple emulator options that work with mapper 30 games like Zed and Zee!

thank you