Luna for CTFd

Luna is a theme trying to create a atmosphere of the game Project SEKAI: Colorful Stage feat. Hatsune Miku on the open source capture-the-flag hosting platform CTFd. The theme is first used in the Project SEKAI CTF contest 2022. Features Modifications made to CTFd Screenshots Easter eggs

Non-cybersecurity challenges for CTF contests

also known as Today’s Episode of ”How to Turn a CTF into an Online Puzzle Game’’. A garage of CTF-ish challenges that are mostly not cybersecurity related. Some of the challenges are included in Kevin’s CTF contests such as Project SEKAI CTF 2022 and View Source CTF 2022, while more of them are rather rejected … Continued

Wordle Toolbox

A set of tools to help solving puzzles from Wordle – a word guessing game. Wordle Toolbox is based on Tonguess Toolbox, a previous work of the same genre.


Tìngäzìk: (Probably Not) the World’s Kindest Online Puzzle Game is a simple and rough web-based puzzle game. The game currently consists of 33 stages of different challenges. The key to each puzzle is presented as a question statement with hints besides them. Answers are entered in the URL, so that such game can be easily … Continued