Not sure why it was, but there was a slight delay to the cursor movements when selecting options with the keyboard. Couldn't tell if the game as a whole was laggy or just that aspect. Wasn't bad enough to where I couldn't complete the demo though.
The differing mindsets between Rex and Regina seems like a promising spark for some character arcs.
I'd recommend making the character icons on the turn timeline bar stand out a little more. Their face in the small diamond shape could be a little hard to distinguish sometimes.
Best of luck with the progress on this!