Neon Koi was a German-Finnish developer that was founded in 2020 under the name 'Savage Game Studios'. It was under this initial name when Sony acquired them in August, 2022.
When it comes to Neon Koi's PS5 output, they haven't released anything. This is because they were a founding member of PlayStation Studios's Mobile Division and purchased to exclusively develop mobile games.
Still interested in their mobile offerings? Well, don't hold your breath as Neon Koi was closed by PlayStation in October, 2024. In the end, Neon Koi didn't even announce a game, let alone show gameplay or actually release something. Despite forming over four years ago.
In fact, Neon Koi was only in the news for negative headlines. Like when the head of PlayStation's Mobile Division and an SGS founder abruptly left under suspicious circumstances, or the failed rebranding in 2023.
In the end, Neon Koi will be remembered as an insiginificant footnote in PlayStation's history during the PS5 era.