What makes Antichamber so cool is how it actually is 100% logically consistent: the main puzzle is to figure out how the world works, and it feels incredibly rewarding to connect the pieces and figure out how to get past some obstacle you saw several hours ago. There's often several ways to solve a puzzle, with harder puzzles rewarding you with faster progression (the game can be beat in less than 10 minutes using some advanced tricks), and on top of that there's tons of secret puzzles that aren't shown on the map, rewarding you with interesting behind-the-scenes knowledge if you can solve them... which is a big if.

Also, having played both, I've had more fun playing Antichamber than The Witness, and would recommend Antichamber as the superior game.

What makes Antichamber so cool is how it actually is 100% logically consistent: the main puzzle is to figure out how the world works, and it feels incredibly rewarding to connect the pieces and figure out how to get past some obstacle you saw several hours ago. There's often several ways to solve a puzzle, with harder puzzles rewarding you with faster progression (the game can be beat in less than 10 minutes using some advanced tricks), and on top of that there's tons of secret puzzles that aren't shown on the map, rewarding you with interesting behind-the-scenes knowledge if you can solve them... which is a big if. Also, having played both, I've had more fun playing Antichamber than The Witness, and would recommend Antichamber as the superior game.