Hey nice game!! I have seen a couple games that make you match a sine wave by changing frequency and amplitude, but this is the most unique way I have seen of doing it! I like the double wave meaning, with the sine waves but using cannonballs to make waves in the water. It's fun to try to get good at matching the wave without the easy mode hints, I tried getting the highest ranking but only got the second highest within a few attempts lol. I do have one tip and it's that the tutorial menu was a bit hard on the eyes graphics wise, maybe it was a color or the clutter? But regardless, it got the point across, and I understood how to play quickly! Good job! (Btw the scoring bands was a nice touch to help the player understand the scoring process.)