For 10 years I've been meaning to make this. (It was even mentioned on Hacker News back when I first wrote about it: https://news.ycombinator.com/item?id=967641)
A week or two ago, prompted by an email from a friend, I made this version, very quickly. A few days ago I switched to using TypeScript (but still no frameworks) and found that TypeScript is amazing.
To play the game, you "find a new project" (for $100 of in-game currency), then assign it to your only employee ("the Founder"). Once you've worked on a few projects you can hire staff. A store becomes available where you can buy further skills and items.
It shows you some basic aspects of software development in a bespoke devshop. Interplay between different roles, how self-managing teams operate etc. I've had a blast writing it!