How to retro gaming with RetroArch

I’m actually accidentaly found this awesome stuff over the internet when I was googling about super mario game, a website called Emuparadise point me directly to RetroArch website. At first thought maybe it’s just another kind of emulator that specific to just one console, a little bit curious so then I tried this emulator, surprisingly it can run on many platform such as Linux, Windows, Blackberry, OSX, RaspberryPi, Android, iOS and it can be installed on some gaming device such as Xbox, Playstation, GameCube, Wii, 3DS. »