Hey Shilence, I was wondering the same here. I know some games but they are not what I search, maybe you would like them or anybody that reads this. - Summertime saga (one of the most known sandbox game); - Dandy boy adventures (like DaCracker said, the game is very good, but still unfinished and probably abandoned); - Summer break (a game that takes inspiration from summertime saga, I have to try it). There don't seem to be many games with such game mechanics as Starmaker Story, maybe it's just a(n hidden) gem.