This is a mixed review - I recommend The Witness with caveats. I haven't beaten it and probably won't return to it, but the time I've spent playing has been magical.

Pros:

• Holy cow this is an amazing puzzle game! I've played it for almost 2 days solid and spent every other waking hour thinking about it. Every puzzle seems to have just the right level of challenge. Despite appearances, there is a huge amount of variety in the puzzles, there's hundreds of puzzles, and there's plenty to do in-between puzzles.
  
• I had no performance issues at all. I have a GTX970 running at 1080p. I just started the game up, it defaulted to High settings, and everything played incredibly smoothly.
  
• The island is jaw-droppingly beautiful. This is probably the most beautiful full-3D game I've ever played. The amount of effort that went into making everything so picturesque AND making all the puzzles line up is truly incredible.

Cons:

• The price. It's probably a fair price if you're one of the people who ends up loving everything about this game, but I had to stop playing early. I would have regretted paying full price if I hadn't gotten this as part of a bundle.
  
• It's very hard to stop playing. This is not a veiled complement. You can uninstall the game, but your brain will keep trying to solve the puzzles. The Witness will find its way into your life in ways you never expected, and that can be quite horrifying. Unfortunately I had to stop playing after realizing that this was happening. I cannot risk my sanity further.
  
• Some puzzles rely on color and sound. If you're deaf or colorblind, 90% of the game will still be accessible to you, but you'll want to check the forums first to see which areas you're going to have to look up solutions for.

This is a mixed review - I recommend The Witness with caveats. I haven't beaten it and probably won't return to it, but the time I've spent playing has been magical. Pros: [list] [*][b]Holy cow this is an amazing puzzle game![/b] I've played it for almost 2 days solid and spent every other waking hour thinking about it. Every puzzle seems to have just the right level of challenge. Despite appearances, there is a huge amount of variety in the puzzles, there's hundreds of puzzles, and there's plenty to do in-between puzzles. [*][b]I had no performance issues at all.[/b] I have a GTX970 running at 1080p. I just started the game up, it defaulted to High settings, and everything played incredibly smoothly. [*][b]The island is jaw-droppingly beautiful.[/b] This is probably the most beautiful full-3D game I've ever played. The amount of effort that went into making everything so picturesque AND making all the puzzles line up is truly incredible. [/list] Cons: [list] [*][b]The price.[/b] It's probably a fair price if you're one of the people who ends up loving everything about this game, but I had to stop playing early. I would have regretted paying full price if I hadn't gotten this as part of a bundle. [*][b]It's very hard to stop playing.[/b] This is not a veiled complement. You can uninstall the game, but your brain will keep trying to solve the puzzles. The Witness will find its way into your life in ways you never expected, and that can be quite horrifying. Unfortunately I had to stop playing after realizing that this was happening. I cannot risk my sanity further. [*][b]Some puzzles rely on color and sound.[/b] If you're deaf or colorblind, 90% of the game will still be accessible to you, but you'll want to check the forums first to see which areas you're going to have to look up solutions for. [/list]