The other response was very accurate, however, my (and many fans') preferred order to play/watch the series is:play Danganronpa: Trigger Happy Havoc (or you can watch Danganronpa: The Animation, as they are the same plot, but it leaves out many details)play Danganronpa 2: Goodbye Despairplay Danganronpa: Ultra Despair Girlswatch Danganronpa: Future Arc and Despair Arc by alternating episodes (FA ep 1, DA ep 1, FA ep 2, DA ep 2, and so on) (I personally watched all of Despair Arc and then all of Future Arc and it still made sense to me, but technically you're supposed to alternate)watch Danganronpa 2.5 (this is Nagito's OVA and it is the only anime so far that does not have an official English dub, though there is a fan-made one on YouTube) (this anime is one episode and isn't necessary to