Especially for a free to play title, this is a masterpiece. After perhaps a bit slower start, the story gets going and takes pretty dark turns. It is a very nice scifi, playing with philosophical concepts of space exploration and post-human universe. Mechanically perhaps not perfect, had some strangeness with traversal, but nothing game breaking. Had a few moments where I felt like I didn't do the intended solution, and could use more guidance. But overall, there is a variety of puzzles, and while the base loop is exploration and gathering , the game keeps throwing in something new at a reasonable pace. And the companion can be a bit annoying, but also endearing, especially if you have time to follow all the dialogue. Absolutely worth the game time and especially for a free title 5/5 with no regrets.