It allows you to add ping to various obstacles, has both TTS and STT, and so on and... I could actually play it, whilst blind [1]. I could play a shooter, and not suck, without my sight.

A lot of what they did with the engine was really simple, but I so wish that there was a wider adoption of those kinds of techniques.

[1] My blindness comes and goes. Some days I have 0% vision, other days 75%.