The concept is really good, and the animation for discovering new words in each dialogue is very well done. I think the click detection is very precise, although I found it a little difficult at times to hit the center, even when it looked centered on my screen. Maybe adding a bit more input tolerance, or even giving the player an extra second to register the click, could help make it feel less punishing or unfair.
Other than that, everything is great. Overall, really nice work!