LaunchBox is a gaming frontend originally built for DOS. However, now LaunchBox supports a slew of emulators and PC games for an all-in-one multimedia solution. Whereas the likes of RetroPie, Batocera, Lakka, and Recalbox feature emulators built-in, LaunchBox doesn’t. As such, you’ll need to add your own. The difference in LaunchBox vs Retroarch is that Retroarch provides emulators, while LaunchBox offers a pretty user-interface. Thus, LaunchBox is used in conjunction with Retroarch.