Thanks to the developer of this 20-in-1 (Mapper 231) rom/ Emulator for submitting the file here, so others can also enjoy it. Its just 328.2KB only, and it's been downloaded 1996 times, you can imagine its popularity from the number. I request you to provide the suitable rating to this 20-in-1 (Mapper 231) file, It will help us to improve.
NOTE: All the Roms/ Emulators available here are submitted by the users, we have tried our best to verify the files, and only the files which are secure are made available. Some antivirus mistakenly assume these files as virus and warns you. But I assure you these files are safe and you can use it.