In order to play any of the Danganronpa games, you have had to own a PS Vita. With the exception of Danganronpa 3, which is also listed for PlayStation 4, all the games have been exclusive to Sony's handheld console. This is about to change. Developer Spike Chunsoft made a very cryptic post on Twitter where it says:
"Attention class. Danganronpa: Trigger Happy Havoc is about to get steamy!"
We don't know if the rest of the series will be made available on Steam, but they might just have realised that the PS Vita is not the best selling platform on the market.