On: Natural Number Game: build the basic theory of the...

[JoshTriplett]

I'm really enjoying this.

A user-interface wishlist item: I keep wishing for the ability to hit the up arrow to get the previous line I just entered (and hit up repeatedly to get lines before that).

(The "editor" mode helps with this, and I ended up switching to that.)

[jansan → JoshTriplett]

My addition to the wishlist: If changing the language, not only change three labels, but the language of the instructions, too.