It all began in Paris, at Ubisoft - the most French company in the history of France. Apparently employees began creating video game characters on their windows with post-it notes. Before long the company opposite began creating their own in response. Then another company joined in the fun. Soon it began spreading across the city of Paris - now the craze has spread to London and Berlin! Those crazy Europeans, what will they do next!
We have a video report of the whole situation above. But be aware - it's very 'Franch'!