CO-LLAGE CIVILISATION has two worlds i.e. past-future and future-past. Visitors are given with objects of a different era to create their own experience in one of the two worlds selected at the beginning. The four chapters are triggered at different locale around the site. Visitors will unlock new AR features by going through each chapter. Their journey reaches the climax when they have acquired all features for co-creating the city at last. Hidden features – “Portals” – were also built in to switch worlds. They are objects of the wrong era in each world like a Banksy print in the Renaissance gallery.