For web stuff, over the last month or so I've been pointing people to the relatively new but still pretty nice A11y Style Guide[0] This is obviously for just getting started. When we get into more complicated markup, I often find fantastic resources, articles, and examples from companies like SSB BART or Deque (no affiliation with either)
When mobile accessibility comes up, few people do it better than the BBC, and they have a great resource on it[1]
I'm also working on a playbook for mobile accessibility, but that's still under development.
The really important and kind of awesome thing is that it's extremely easier to test the accessibility of whatever you're building as you build it. Unlike the bad old days where screen readers costs $1,000 and no developers had access to them, on mobile or Mac screen readers are built directly into your device, and on Windows NVDA is completely free from [2]
Hope this gives you a starting point, and if you have more questions feel free to reach out, email in profile.
[0]: https://a11y-style-guide.com [1]http://www.bbc.co.uk/guidelines/futuremedia/accessibility/mo... [2]https://NVAccess.org
Why? I used to use make menuconfig back in 2000--why should it not work now?
3d game? This I'll grant you. Some experiences are just not replicatable for the blind, though if you're interested in this at all check out the weird and wonderful world of audiogames and 3d audio with HRTF.
An editor? Even a visual editor? Is not one of these experiences. I used to use Visual Basic 6 just fine, dragging and dropping controls out of the toolbox, lining things up, and editing the code behind the widgets all the way back in 2002.
I see that this project apparently took 8 years by 150 people, according to the OP. With this much human effort behind it, it's remarkable that no one once said, hey, I wonder if anybody with a visual disability might want to use the app that this will be a part of?
If I'm trying to read a lot of data in a CLI, the output of top, for instance, I need to read by line with the screen reader fixed to a given column offset but it works fine even if it's a little awkward.