It's funny. I just finished writing a lesson where I teach about different color formats. In it, I explained how difficult it was to choose a color with rgb values, because that's not how humans think about color. This game is a great example of that.
HSL is much more intuitive. As soon as you have an idea of the hue scale, it's very easy to define a color with saturation and lightness levels.
Completely agree about HSL being the 'thinking' color space. As an exfersise, I get my students to define the difference in the colors they are wearing using HSL.
If you think RGB is hard to conceptualize, try Lab.
HSL is much more intuitive. As soon as you have an idea of the hue scale, it's very easy to define a color with saturation and lightness levels.