Such a quirky and funny idea to combine aliens and cute fluffy cats. Great art, especially the cat's reaction animations and the dorky "fellow human". The music choice and Sound Design is very fitting.
I would just nit-pick that the background radial gradient doesn't really fit with the rest of it all being pixel art (in my opinion), the foreground assets are great though! The delay (i.e. animation/transition time) between experiment and reaction feels a bit slow. Might just be used to clicking skipping these things similar to how it's implemented for the dialogue.
Really cooschlio game and all that by one person! Wishing you the best in the competition, River-chan.