This was a fun and brief experience. I feel like it could be the seed to something great. I really love the implementation of the sliders representing focus (energy). I could see that being applied really well to other genres (imagine it applied to a 4X games action priorities, for example).
The design of your bird starbirds are very nice. Both cute and cool. It would be nice to learn more about them and their intergalactic conflicts. I'd love to see where this goes if you expand it at any point!
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I also took a moment to check out your other game, "missing" and that is also a short but very exciting and visually intriguing experience. I love a good weird shmup!