I loved my first five hours with the game -- the novelty of discovering an entire solar system, flying around with intuitive controls which remind me of what it feels like to fly in dreams, etc. However, the game soon started to drag on -- I was basically wandering aimlessly, filling out a checklist and looking for audio logs (bits of text on the wall) which slowly filled me in on a story I really didn't care for.

This went on for around ten hours, with me feeling like I was just filling out a checklist for no reason, until I suddenly started accessing all the "endgame" areas in quick succession in the last five hours, and it suddenly felt like I was making strides towards understanding how to finish the game. Thus, I went from making little to no progress within the first 15 hours, to suddenly beating the game. In retrospect, I feel like I could have beaten it in 10 hours if I had more of an idea of where to go to look for actually important information, and I wish there was something the game would have done to help me trim down the boring bit in the middle.

The ending is a definite highlight of the experience, and is probably why this game is so overwhelmingly positive. I don't want to sound cynical, but I think everyone knows that a good ending can overshadow a boring slog in the middle part of a story, in one's memories. I just wish this game didn't force you to do the same thing over and over so much, and maybe trimmed the fat with how much unnecessary information you end up "discovering".

Overall, it's certainly a good game, but it suffers from glaring issues with its pacing and tedious gameplay loop. That's all I can really say.