It's a one-person project as well, and a truly amazing work of art.
Played it with my partner to get all the endings and achievements; it's been an amazing experience.
Although I wouldn't call the game depressing - I found the satire funny as hell.
https://en.wikipedia.org/wiki/RollerCoaster_Tycoon_(video_ga...
It's still pretty successful worldwide, with major fan conventions and contents being released in PS4, Steam, etc. Quite an interesting phenomenon.
> But throughout the four and a half years, he never once reached out online by asking questions or speaking to another developer for advice. He hates asking for help.
Perhaps he did some searches but it sounds like he never interacted with a site like StackOverflow.