Seems interesting, but I do feel like there isn't quite enough content in the demo to drive me to play more.

Feedback:
- I really liked finding the code for the Extra menu; however, if you get to the Extra menu without the code, is there a way to get back to the main menu? I couldn't figure it out.
- When playing the card game from the Extra menu, is there any way to reset or exit? I won and then was seemingly stuck on the screen.
- The card game is a little confusing. I did figure it out, but think a few UI tweaks could make it more intuitive. Reduce mana as it's spent, have a distinct play area, highlight End Turn when the player is out of possible moves, indicate what the opponent is doing, etc.

I can't give much feedback on the main gameplay since what I saw of it seems fine, it was intuitive and interesting.

Hey that was a super fun demo to play! Great job on it. The only constructive feedback I have is that I didn't understand that the text was updating and changing at the beginning. I would suggest a verbal que, or sound effect to associate with the text changing. Again, it was really great and engaging!