So... it's Myst.
Don't get me wrong, Myst was a great game, but this is basically Myst or Riven. It's not bad as they go. I had fun playing it, but the thing is, I'm glad someone took the time to make a Myst-style puzzle game that challenged the player with some different styles of puzzles.
Your one caveat is that you don't offer the full game on here, we have to go and download the game, which makes this just a demo, if it's not the complete game. I welcome more games like this, where you have to think your way through, and replay value comes from trying to beat your previous time and score, but those notes don't seem to able to be found. I mean, Covert Front was a lot like this, as was Submachine and other games. This just ends up feeling like a 3D version of those other puzzle games, that you made for a tablet or phone.
So while it looks good and plays well, the caveats I mentioned make it less fun than what would get the full 5-stars from me. Maybe you can offer a full version in the near future, here on NG. Until then, a decent effort from a professional company; nothing new or innovative, very conventional, and reminiscent of greater games with similar premises.