the game is decent,the idea of the planets having different traits according to their characteristics is pretty innovative, however the concept of pluto wanting revenge is a long repeated cliche,but its only on the title ,as many say "dont judge a book by its portrait ".
there are some bugs that affect the gameplay like the enemies damaging you when you destroy them if you go fast,you should try to repair them.
the visuals are pretty poor,you know,the planets not having animations when they do actions ,the main menu being mostly black,the letters being on a white/black background ,they can be improved(The pixel art has nothing to do with this),But i must say that you put effort in the letters and the end.
a thing that can be added is a high score mode so the player can play longer.
the game is very hard at the start,i say that you should make a more linear difficulty, but its still a good game.
the sounds and the music are very good,i can´t say negative things about them.
overall its a decent game,however, many things can be improved to make it better.
but after all,we are in a game jam so i can say that you put a lot of effort on the game in the 7 days, also you should be aware of feature creep, yes i said earlier the planets having different abilites is very original,but it also drained you time for doing better visuals.