That was so emotional already... I don't know if it's only because I played at 2AM when I'm extra emotional about everything or maybe I just felt MC's loneliness but the demo made me tear up for real. Only a few games have made me actually cry. I'm looking forward to the full game!
after installing, download the game and extract the zip file.
open joiplay, give necessary permissions and then you'll see a "+" icon. click it > add game > select game folder > choose .exe or .py
you should be able to see the game icon now, just click on it and it'll start loading. sometimes it will recommend a plugin, you can download it but i just proceed with the game.