I had a lot of fun with this one. This game felt like it was inspired by Portal without feeling like a bland clone of it. The puzzles were creative, the levels were well thought out, and the controls felt good. I'm a big fan of puzzle games, though tend to play more 2D ones, as 3D games sometimes make me dizzy and give me headaches. There were a few of times I had to take a moment to just stand still because certain movements were starting to trigger a little dizziness, but I was having enough fun that I wanted to take that moment to refocus so I could keep playing.
The arrows pointing you in the right direction were really helpful without feeling out of place or intrusive. They felt like they belonged as part of the station, and gave me something to look for if I ever got turned around. It was also nice that they didn't lead you to everything, so you were still rewarded for exploration.
I enjoyed the addition of the break rooms. They and the journals helped give more personality to the game and gave me the sense of actually being on the station. To me, they didn't feel like a break from the regular gameplay; they felt like a part of the story and a part of the world.
The sodas were also a lot of fun. I enjoyed having some in the first break room to test out and play with in a slightly more controlled environment before trying to find them and use them for solving puzzles. It might be nice, though, if there was a different button to interact with the vending machines to get a drink than the one used to pick things up. There were a couple of times I accidentally picked up the machine when I meant to try to get a soda out of it.
This was a really fun game and one I could see picking up when it has a full release.