It seems like only yesterday when the original video of 9 year old, Caine Monroy took the internet by storm. Caine had invented a full arcade in his dad’s car shop which was spotted by a local LA filmmaker. Soon after Caine’s discovery, a short doc was made about his little arcade – and blew up across media outlets in Canada and the States. Following the media, hundreds started lining up to enjoy some of Caine’s cardboard creations.

Now, Caine is back with the Imagingation Foundation and his Global Cardboard Challenge, inviting anyone to build “something awesome out of cardboard and imagination.”

Participants will build until Oct. 6, the one-year anniversary of Caine’s original flashmob of customers. Not surprisingly, there’s over 100 events are scheduled in more than 25 countries. You can find the scheduled locations at the website, and here’s some instructions for anyone who wants to organize their own.