Just finished it on Linux using steam proton, worked fine except redeeming the reward seemed to make it hang at which point i force closed it. Hope Selen will provide a simple link in the behind the scenes stream.
As for the game, it was pretty nice given the compressed dev time (2 months). If Selen ever considers making more games, I hope she can give the team more time and have them implement baseline features like menus and progress saving.
Also having it release on steam would not only simplify distribution (automatic updates instead having to re-download it every time) as well as serve as free advertisement, but I understand getting the required paperwork ready for that could be "too much" and that this type of game will have zero appeal outside of nijisanji EN audience.