Imac downloads

i download the Romulation for games, but my imac wont work the download. it asks for a application but none of them work. any suggestions? or help?

Downloads on Romulation are compressed, RAR, 7zip, etc. You need a program to extract the files from the compressed file. WinRAR has a version that works on Mac.

thanks.

And of course you'd need an emulator to run the games/flash cart incase you didn't know.