This is why it's called 'No-Intro'. In later years, we've covered more and more systems: after all the hard work on GBA, GBC, N64, e-Reader and N-Gage, we opened more fronts of preservation. You won't find ROMS or other piracy material here. No-Intro builds and maintain DAT files for ROM managers. DAT file for a given system, when run through a supported ROM manager, allows you to audit/check your own ROM collection status (completion, ROM naming).