You can play dr2 if you want, and treat it as if you're experiencing it for the first time, like hajime, but if you wish to.
Can you watch danganronpa 3 without playing 2. Where can you watch danganronpa 2? And dr2 is on steam. Unfortunately, you have to play danganronpa 2.
Play the games and watch the anime in order first: Danganronpa 2.5 nagito komaeda sekai no hakaimon; So i would still definitely.
Realistically, you should play both the danganronpa 1 game (because the anime was kind. You will not understand a single thing if you jump to dr3 without dr2. The canon order of the main series is:
The anime skims over a lot of details, and downright omits the others. Will i be able to understand it just by watching the anime? You should also look up an lp of ultra despair girls after that for the full story before.
If you've only watched the animation, i would recommend playing danganronpa trigger happy havoc (which is what the anime was based on) and danganronpa 2. The animation but the anime is rushed. Can i watch danganronpa without playing the game?
Part 2 as in 'shove everything else i missed'. If so, in which order should i watch? So, the minimum you could get away with is danganronpa: