To be honest, I wasn't satisfied with the demo, especially since you stretched a 5-minute gameplay to 20 minutes by leaving the player completely free without any instructions.
Also, the storytelling in the environment felt very weak; you said it takes place in the womb, but it looks like a completely unrelated location. Even the proportions don't quite match.
I expect at least a better environment design and better instructions in the full version.
The part I liked most was the sound and ambient design. Mechanically, I'd say it's average.
Please take this as constructive criticism, not destructive.