Incredible game! I got true ending in a few hours, and I couldn't be happier with it. Everyone buy and play this game.
I was excited for the next big sylvie game after Clockwork Calamity in Mushroom World, and I wasn't disappointed at all. The bouncy platforming and great soundtrack make a return, but the whole game feels slightly more refined, with a stronger sense of style and cohesion.
I kept on being surprised by the amount of story in the game (and the general strength/depth of it)- the characters were all well-written and fun to interact with, and the sheer amount of dialogue they had (every character x every item) surprised me and had me coming back to the terminals multiple times. I loved the meta aspect of a story reflecting on the design of the game that the story itself resides within- it made what the characters had to say about everything a lot more interesting, since i was already invested in the design of the game
I ended up having to look up some Gameplay footage to figure out the jungle labyrinth section (i was too impatient- thanks to Personman Gaming / jseakle), but besides that the world design really walked the perfect balance of opaque and clear- I felt like i was constantly being challenged to unravel more secrets from the game, but it also felt like it took just the right amount of prodding to figure things out. The idiosyncratic design made the game feel unique and different and frustrating in ways that kept me engaged, but the design of the items was so fluid, open-ended, and intuitive that trying different things felt fun rather than tedious.
TL;DR: fun, strange, wonderful. Buy it.