Loved it! I saw Markiplier play it and knew I had to give it a try. Thanks for putting it out on Mac!
The looping feels a lot like PT, but it's not just a looping hallway simulator like every game that's a clone of it. Not being forced to go through the same environment again and again just to see what's changed is a nice deviation from the norm.
The horror element is definitely there, but it's not a jump scare simulator, either. Rather than being scared- particularly with the spider area- I felt more dread than terror, and that's what most PT inspired games are lacking. Horror can't be whittled down to just scares; there's a spectrum, and too many games out there look for something that can only startle. Penumbra is a good example of the other end, where dread dominates.
As for the environment, I have to admit that I'm a fan. The snow area is a bit dull for my tastes, but it was palatable. What really excited me was seeing the cave open up to the jungle open up to the asian landscape. The transition was very smooth, and the fact that it felt believable helped to offset the "shock" of how it is you leave the environments to go onto the next.
I was disappointed to have the game end so early. I would've loved to have explored the areas more than I got a chance to, and that's another good sign. Leave your audience wanting more, not gasping in relief that the experience is over.
That's a solid 10 from me.