The alien is super cute! Imo you lost way too much control when you weren't directly on a planet, which made it feel unfair when you died. The moving planets were also kind of janky, as when you just moved you'd fly off. It was a little rough around the edges, some parts of the UI (Input fields, sliders) were the default engine settings. You can also cheese the levels by going into orbit. The sounds were nice but the sound effects were WAY too loud compared to the music. Having settings where you can individually adjust the sfx and music volume could have fixed that. That being said, super cute game, nicely done!