Enjoyed this little game! The colour and sprite work was great - the water effect really added a lot of value to the visuals. A bit of a shame the player controlling object was not quite as high quality (sprite work) as the water, obstacles and collectables. The music was good and I enjoyed listening to it. I played a single run up to 250 points and didn't get sick of the music. As some constructive feedback, I'd say a game like this would benefit from some form of increasing difficulty / time restrictions - as the gameplay stayed pretty static and essentially whoever plays the longest would get the highest score. This could be done by adding a time limit, or increasing the speed continually. Thanks for submitting!
PS: tried your website and it was just a blank page for me :(

General

Fun little arcade game but I was missing a challenge or a goal to achieve. Other than that I managed to get 150+ score and then I got intrigued to see what would happen if I crashed myself into a rock. I was not disappointed :)

Also nice to read that you learned something new! I hope those new learned skills will help you in future projects!

Theme

I think it fitted the theme well. I got an arcade / old school game vibe which is what you were going for (I hope I am not wrong saying that :P )

Audio

I liked the background audio and props to you for making it yourself! Maybe for future projects add a way to control the audio? Even if you start with a simple mute function. That way if someone would like to control it they have a way to it ;)

Graphics

Nice! love the pixel art at first I thought it would be hard to see the difference between the background and the objects in front since there is not much contrast but by surprise for me it was just right enough.

That's a simple and nice game. Wish the difficulty increased over time. I like the music.