10 Video Game Puzzles You Couldn't Solve (Even With A Guide)

Every puzzle in Witness follows one simple mechanic: You need to draw a path to the exit of a grid-like maze. Of the 650+ tasks that Witness boasts, the most challenging one is... The Challenge. (It's not a creative name but it's very justifiable.) If you choose to partake in this endeavour, you must complete a dozen headscratchers in seven minutes.

Now, you might be thinking, "What's stopping you from looking at a walkthrough?"

And the answer is simple - These 12 enigmas are generated randomly by an algorithm. It's impossible to look up the answers because they didn't exist until the algorithm created them.

Now, this is not suggesting The Challenge is the hardest brainteaser in the history of gaming. But because its random nature makes it guideproof, it's easy to see how Witness' toughest level has maintained its infamy over the years.

As frustrating as The Challenge is, it's deeply gratifying when you complete it since you can't use outside help. If you are one of the very few who actually conquered The Challenge, you know it's because you relied entirely on your own skills.