If you’re into self-abuse (or you’re one of those few people who are good at and enjoy mindgames), the K-Dron has your name written all over its shiny surface.

But the K-Dron is not originally a toy. It’s a shape discovered by Polish artist/mathematician Janusz Kapusta and it’s got some unique properties. One of them, it appears, is that it can be turned into a game that will drive unfortunate users insane.

The brain-teaser is deceptively simple: 4 K-Drons needs to be assembled to reproduce the shapes in the included booklet. However, it’s more difficult than it seems…

It’s not a new game concept by any means. I played Pentomino when I was 8 and loved it. But the complex shapes will give more depths (and 3 dimensions) to an old idea.

How much under $29.99?
A lot: $9.90 on Amazon.com.