The visual identity is really cool, I really love the use of colors.
I will say the gameplay currently leaves a lot to be desired, half the time I can't see anything with the constant spray of same-color particles. Generally the best strategy to deal with the 3 enemies I have seen is to just kite as far away as possible around the big circle, but that means you just lose sight of your own ship in a game where visibility is already difficult.
The upgrade selection can be frustrating since all you really want is enough damage to kill things at a satisfying pace but the game will sometimes just not give that to you and only give you score mods, which makes the pace of the game very slow when you can't acquire any damage, and is somewhat antithetical to what I think the game is trying to achieve gamefeel wise.
That being said these type of balance issues are very easy to fix with a tiny bit of iteration which I understand is precious time spent during a game jam.
I would definitely play a post-jam version! It was very cool overall...