Some very cool illusions here, but the relevant one to this forum is Infinite Maze.
This is a game of PacMan that changes the layout after every move, but can easily go unnoticed. Let's see who is first to recreate in C2
Article on Finalists is here: http://illusionoftheyear.com/cat/top-10-finalists/2014/
PacMan video is here: http://www.youtube.com/embed/pbDU3cp502o
Develop games in your browser. Powerful, performant & highly capable.
Really crazy game xD, music it's also cool
It does suggest a few ideas , several of the illusions interest me .