I like the idea, it creates a lot of challenge and resource-management! It feels a bit complex to grasp the controls at the beginning though (although I imagine implementing a more contextual tutorial would take more time and effort for a jam scope, but still, food for thought). Would be nice if there was an indicator on the left/right of the screen when there's an asteroid coming so it creates more urgency and feedback to the player.

The game is fun , i like the concept of only doing one thing at the time , the art is great too.

I enjoyed this, I liked the idea of taking only one action at any given time. There are definitely things I'd tweak, such as an asteroid indicator in the UI or more visual feedback when your attacks register on the asteroids, but I enjoyed playing! Great job!

Good UI, solid gameplay loop. I'm missing an indicator where the asteroids are, as it is now it feels a bit unfair being hit by something you didn't even see, but I get you only have so much time in a jam situation. For some reason I found the controls to very unintuitive, but I don't out why, so I'm afraid that's not an overly constructive critique...

As the other comment pointed out, I also don't think this game changed enough of the base formula of the genre to stand out as having a "one" theme. But it's a pretty polished entry given the amount of content and time restraints :)

This game reminds me of Atari's Missile Command, a classic defense game.  I do not feel this game runs far enough with the "only one" theme, given that the player is the only defender in most games of this genre.