itch.io

I think it's because.. that game is what Discord's overlay thing uses on default if it can't recognize the game perhaps since it does so using igdb (Video game data base).

You can simply manually edit the game's name in settings.

It was 4GB on the initial download for me, Either you had a old version that got updated or you remembered it wrong probably

Can't you play in skip mode to avoid it? Since i'm not sure what exactly it does myself