The main idea of the game is good, but i feel like using keybinds instead of UI buttons is better. Also, i feel like the graphics are way too bright, it would be better to darken things up, and maybe add more things in the background. Also, rewarding the players with an item / a boat upgrade would be cool when you find a treasure. Finally, there's a bug making the player stay at its position when the boat goes forward. By the way, i really like the boat model of your game. The game needs improvements, but it's a game jam afterall!