Looks very promising, I can see how upgrading/equipping the ship can be very satisfying. Some feedback:
- The starting state of the ship is quite sorry. Very slow, bad at manouvering and shoots weakly and slowly. I get that I'm supposed to upgrade this but as it is now the starting state is just not that fun. At least let me start closer to the island so I can upgrade
- Sound and music would add a lot to the experience
- It would be nice to have some visual way to see the cannon cooldown for each side, so you know when you're ready to shoot without having to try it and fail or waste a shot
- Some tutorial or help on how to navigate and shoot would make it easier to get into the game
- The upgrades should have some explanation so you know what they do and how much they cost
- The icons could be alot more clear. Planks is an unconventional icon for healing (or is it repair? That's a bit inconsistent) and the pirate ships on the top is the health bar - but why is it made up of ships? It looks more like lives than health. And why is there a gold coin?