The great new zombie parkour running action game “Dying Light” features a faithful remake of the Super Mario Bros. World 1, Level 1. The easter egg is found on the South-Western most building in the Old Town Map, on top of the roof. The blueprint for the Pyza suit is found where the secret block on World 1-1 is. If you don’t know where that is, (and I feel sad for you if you don’t) it’s above the 6th block after the fourth pipe, before the first gap.
Good night, and good luck!