There’s a pattern you have to take note of when you’re solving a Rubik’s cube–something about the colors and what they should look like relative to the ones around them. If you’ve mastered solving 3×3 cubes and no longer find 4×4 and even 5×5 Rubik’s cubes challenging, then maybe it’s time you gave the Brain Cube a shot.
It resembles the Rubik’s cube in form, but that’s where the similarities end. Instead of six colorful faces, the Brain Cube is only rendered in one color. It’s also got grooves and markings on the surface (like the ones on the human brain), which are meant to be used as a guide in putting the brain right again. And perhaps to distract the player, it’s made from a soft, squishy material to resemble an actual brain somehow.
It’s available for $35.