1. 1990s onward (spread of digital cameras)
    Mysteries & Phenomena ★★★★★ Worldwide

    Orbs

    White or translucent balls of light that appear in photos. They are sometimes said to be spirits or energy, but they are thought to be the camera flash reflecting off dust, water droplets, insects and the like.

  2. Heisei era (boom in the 2010s)
    Mysteries & Phenomena ★★★★★ Japan

    Isekai Tensei (Reincarnated in Another World)

    A story pattern in which a hero dies and is reborn in another world, or wanders into another world alive. It became a huge boom in the 2010s from novel-posting sites. Tales of going to another world and back are old, like Urashima Taro, and the internet also has urban legends about "ways to go to another world."