A really fun shmup! And I'm honestly pretty surprised by how fleshed out and complete it is considering it was made in just a few days. Especially with multiple difficulty levels and everything. This is really good!

Nice, fast-paced experience. The pixel-art looks good! In the beginning I was overwhelmed (left/right/soot/shield - already too much for the Tiger ;-)) But then I spotted a certain pattern and "cheated" my way to victory ;-) But hey, defending is a serious task - if you are successful, everyone is happy, and nobody asks :-D

I once also implemented a Space Invaders clone - it is one of two examples for my programmable game console. Maybe you want to give it a try?

https://humane-tiger.itch.io/robo-8

this was a very enjoyable space invaders but with boat -- great concept and well executed 

Pretty fun game, I played all three levels and i really like how the game makes you prioritize different cannons. God game design is about giving the player interesting choices and I feel like you did that very well. My only bit of feedback is that the 1st two difficulties are a bit to easy once you've cleared out the initial enemy ships. (this is because the next set of enemies will only spawn from one side so you can kind of just spam the the cannon). I think special credit has to be given for making the cannon shooting feel so fun. The game is good presentation wise, I always understood what i was looking at. The sounds and soundtrack were also well done.  Overall, I had a good time! Thank you for sharing your game.

A very nice little game with a fun concept and an entertaining music ! I did all three levels and I had fun! I was a bit sad to see that the score calculation does not work, but I had a lot of fun. The game might be a little easy when there is only one island left, but I think other people already said so. Maybe giving a bonus score the more island the player keeps alive?
Overall, very good job, loved the game :)

Cool arcade game! Had fun playing it, could be cool to add some upgrades for the islands. Still very nice 

Really nice concept, but i think if there would have been some kind of cooldown to shoot it would be a bit harder. Because i tried to save all my island but when there was only on left i just spammed space. But still a very nice Game!

Pretty fun. I managed to beat both the medium and hard difficulty, but for some reason my score shows as 0 :(

I enjoyed the gameplay though. The concept is cool and those ship sprites are neat. Good job!

was having fun doing the soundtrack for the game :)

Really liked the premises of the game and played it for some time. Notieced that even in full screen (HTML) I didn't see everything and had scroll bars. And the first time I played, I only got 4 enemies and then nothing happened while the countdown continued. Would like to see it evolved though, like the idea! :)