I really liked the enemy and spaceship sprites; however, the backgrounds seem a bit cluttered and somewhat contrast with the overall aesthetic. The UI is quite intriguing as well! The gameplay could benefit from a bit more refinement in terms of the satisfaction of defeating enemies. I don't feel that my bullets have the desired impact, especially since there is no sound accompanying them, which often contributes significantly to the joy of playing shoot 'em ups. I understand that this is a game jam, though. Congratulations on the effort and the game; it shows potential!