Really nice experience! I loved how physical the cube movement felt. The screen shake, sound and particles made it really satisfying to control, kind of giving it a slightly Katamari-like feel in a minimal way.
The meadow looks beautiful and the overall vibe is light and pleasant, which creates a great contrast with the heavy black cube.
I was curious about the green projectiles. At the moment they felt quite abstract, so it could be interesting if they were tied to something in the world, like insects or other meadow elements. It also made me think it could be nice to have some kind of collection goal.
Overall, there is a lot of potential here and it feels like a strong foundation for further development!