Blend the following games together: Zero Escape (for dark plot setup) Persona 3/4 (for social development) Phoenix Wright (for investigation and trial)
And then add original characters, really strange/wonderful music, and a great 2D/3D mix art style, and you have Danganronpa.
Props NIS America on handling this localization. The other Spike Chunsoft games over here (Zero Escape series, 999/VLR) are localized by Aksys Games. And they do a really great job. NISA has been able to take a lot of liberties in their dynamic translations for Disgaea, Atelier series, etc. I think the quirky characterizations of these characters makes it a good match for NISA to localize. I'm very glad they brought this game (and its sequel) over here. Great work all-around.