The island in co-op walking simulator Big Walk is home to lots of puzzles, and those puzzles can't be completed by a single player. This is a co-op game in the truest sense of the word: you can't get anywhere alone.
Some puzzles involve flipping switches in unison, others require communicating over long distances or through sound-proof glass, some need one player to describe a sequence of symbols only they can see to their teammates, who then have to replicate the sequence somewhere else. Solving a puzzle releases a prize, an object that can be used to explore further into the world and access more puzzles.
