I... disagree completely. Haven't played the former, but I'm not digging the bear. Zero Escape at least tries to be somewhat realistic, DanganRonpa is off the rails form what I've seen.
Both parties want to escape some place.....that´s enough reason for a crossover.
Danganropa is not that Fantastic compared to Zero escape.
most things actually make sense in Context.
I heard there´s a translation of the PSP version, i guess you can play on an Emulator or a normal PSP, but I don´t like Japanese VA, thank god the Vita version has English audios.