Koi

"Koi" is very nearly a hidden gem, with the only issues being that it's very easy and the graphics could use some work. You are a fish (A coy, I suppose) who collects other fish to open flowers, avoid enemies and complete simplistic puzzles. It's very easy but some of the achievements require a bit of work. There is a weird, strangely beautiful cutscene hidden in the game if you complete an upstream section really quickly, but some of the graphics are just hideous, especially at the pipe section of the game. The music is beautiful and it's not a bad way to spend a couple hours. I liked it but it needed a tad more effort on the presentation side to be truly wonderful.

I can only say that for the money you paid is worth it, but I can't really say anything else positive, a lot of times it feels like it desperately makes you lose as much time as possible to make you lose time (and not for atmosphere), the star level above all else feels just frustrating with the white fishes only getting in the way while not being a real threat, the immense and useless space made just for you to make more and more rounds. If the star level was instead some kind of playable credits it would have been way more fascinating. Because of these solutions the game quickly lose the atmosphere of its magic, aside from some highlights that make the title worth of its price

I was looking for a relaxing game, but ... I can't relax at all. You're constantly bombarded with sound effects of water drops (which I perceive as stressful), and there are no options to adjust the SFX or music volume. It's possible that other players find those SFX relaxing, so ymmv.