That was hard, but very fun. I don't know if it means I'm a good typist or a bad typist that I struggled so much. The presentation was simple but stylistic and felt perfect for this kind of game. The particles that spawned when you fully typed a word were extremely satisfying. I also think this is one of the most creative and perhaps best interpretations of the theme I've seen.
Couple suggestions if you ever wish to update this: 1. I feel like making the rules on the left uppercase could remove some ambiguity when you're having to reference them quickly and not remembering if that 'L' is actually an 'I' or a '1' or what, and 2. maybe ensure the next word that appears after a new rule is added actually uses that rule to ease the player into the change.