The Skull CTF

by Wokwi

A mind-bending hardware puzzle in three acts

View all updates Oct 31, 2020

Our Campaign is Live. (Happy Halloween!)

by Uri Shaked

Ahoy Mateys!

This long-forgotten skull yearns for a place on your desk…a place from which, upon waking, it will endeavor to shatter your mind with a horrifying reverse engineering puzzle. Show it you are not afraid by helping us gather enough doubloons to raise it from the dead!

About the Author

Uri Shaked


$1,226 raised

of $666 goal

184% Funded!

Pledge Now


The Skull

A single The Skull CTF board (☠)


Two Skulls

A two-pack of The Skull CTF boards (☠☠)


Three Skulls

A three-pack of The Skull CTF boards (☠☠☠)


Pile o' Skulls - Classroom Pack

A ten-pack of The Skull CTF boards. (☠☠☠☠☠☠☠☠☠☠) Perfect for classrooms, workshops, conferences, and very nerdy Halloween parties.


Programmer & Header

Cheat! Or, better yet, design your own puzzles and load them into The Skull's brain using the included SparkFun PGM-09825 AVR Pocket Programmer. Also comes with a ribbon cable and the SMT header you'll need to use it. (Does not include the MiniUSB cable.) Some soldering skill required.


(Early Bird!) The Skull

A single The Skull CTF board (☠)



Wokwi creates tools for the Arduino and maker community, such as AVR8js, the Open source Arduino Simulator, and GoodArduinoCode.

Uri Shaked

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