Awesome entry!
Nice use of the Web Speech API, which frankly I didn't even know about.
I'm not famiiar with Civilization and RTS as a whole, but I miss the lack of enemies and threats. There seems to be not much incentive to build and research new units, other than just unlock them and see them in action.
I mean, near the endgame, I just kept tapping 'E' until I leveled up my village enough to build the spaceship.
Of course, those things are expected in a full game, and you made A LOT of content for such a short Game Jam.
Congratulations!