I imagine it would be difficult to capture what makes the the original so special and also make improvements. But yes an open source alternative would be wonderful.

Any idea if someone already started a promising project? I did a quick search on Github and found quite a few HS simulators, most of them archived. Didn’t find anything that’s HS inspired. I doubt I’ll find time for it between my other hobbies, but I do have a couple weeks of holiday leftover from last year, so who knows.