Digimon Survive is one of the really few games that I had to get even on steam (I own like 8 games on steam, 4 of them got a gog release and now I own them on gog too).
It is just that good, even better than what I thought was possible.
It is a long VN with good RPG elements, a story that change a lot based on what you do (and the evolution and events change too just like it was in the original Digimon Adventure) and a lot of Digimon to be friends with.
Of course it's not a perfect game, it got a lot of weak points actually like the befriend system, some path of the game that contradict (even in the true ending path)... but for a game that got so many issue during production and that got a really low public interest that will not lead to Survive 2 for a long time... It's just an amazing game.
I would love to see released here on gog to support it again.
It is the only Digimon product that I think it is on par with the original Adventure 01.