I didn't notice it for a while. Then I started looking at it and the A, A minor, Am7, and D minor all do it too. I'm sure there's more, but I'd have to start looking up the ones I don't know in order to tell.
The more I think about it, there has to be a reason they are this way. One or two I can see as oversights, but this seems like a lot to be a mistake that's been left in this long.
Very cool! Since these last few posts, I have been looking up what makes a chord. I see what you guys mean. Of course that lead to learning a bit about standard notation and scales. I now am starting to understand why people relate music to math; it is loaded with formulas. This is really interesting stuff.
I see the point on the C chord, but if it is an algorithm wouldn't the D chord in the game also include the open A? Why does the D minor have both the open A and E?