Everything about this game is great! The menu is beautiful! Well done author! I like the attention to detail. One thing - controlling combinations using buttons is a little inconvenient. But I liked the idea with the combinations.
Add more to make the bullets glow the desired colors.
You can also add a contrasting luminous and non-luminous button. Also, the style doesn’t include such low-poly cats; it would be better to make them 3.27 times more detailed. =) Now your project is mine, on par with Meowdy
And the color of the ball can be changed with each wave. You can also think about the background so that it is prettier and matches the planet - a ball of wool