[Nefandi]

I played the demo several years ago.
It started off with a couple people in a cave and there was a robot mind that communicated with you.
After the first puzzle getting out of the cave, there was a couple more in the demo.
I remember that they were mostly audio puzzles. You would be standing on a floating platform and you had to play music with the machines that would activate other parts of the puzzles.
I remember being in a maze with walls that shifted. The maze was circular.
I can't remember it.
I remember that it got mediocre reviews but I liked it.
I always end up looking at Aura, thats not it. Echo, that's not it either.
It plagues me.

[diego]

Time Machine, perhaps

[Fien]

Might be one of the adventures developed by Detalion. Mysterious Journey II: Chameleon, or maybe Sentinel: Descendants in Time.