The bevy-ui-navigation and persistent storage features are also what I have always wanted to do, but the game jam week is really too short, and I couldn’t make it at the time of submission. In fact, the github repo has been updated a few days ago with a version that integrates bevy-ui-navigation, and also fixes some UI bugs, but it is still in the game jam voting stage, so I can’t upload the updated version.
With the current version of the alpha (white) particle speed (should be reduced in future versions to make the difficulty not so high), using the keyboard to play this game is really not very advantageous, because you need to have a certain speed and accuracy in controlling the U (yellow) particle.
BTW, my personal highest record is 95s ;-) A good strategy is to hit the C (green) particles continuously, keeping a certain number of high-level C (green) particles on the field, so that the number of alpha particles can be effectively maintained without being too high.