NYC Post-it wars (12 Pics)

Everything started with an innocent “HI” on the 6th floor at 75 Varick Street in NYC

Soon, “Sup” appeared on a building from across the street at 200 Hudson

As both buildings had a lot of media and marketing agencies, it eventually turned into WAR

The windows started filling up with funny pictures and messages

Somebody made a Snapchat icon

Others took a more random approach

Even the Angry Birds got involved!

Post-it manufacturer 3M also joined the war by providing free ammunition (i.e Post-it notes!)

As the war got more creative, it seemed that nobody would win

Not even Spiderman could stop it!

With no other option, Havas Worldwide brought the war to an end with this epic mic drop

Workers stayed late with beer and pizza to create the spectacular finale, and fellas from Spectacle Studio later posted this vid