Post it war in Paris

The post-it war in Paris is raging. In the corporate world of offices, it started with an employee who leashed her creativity and made a video game hero on her window with post-it notes. The Bank across could not stay idle and riposted with another video game hero. And it is all over Paris, its suburbs and going beyond!
It has been going for a few month.
Who said one cannot break the chains of monotony with whatever is available around?

Post-it war link to more photos