The whole thing looked relatively harmless at first. I climbed into a chair in the middle of what looks like a giant hamster wheel, and KT reps strapped me in with a seatbelt and a roller-coaster-style overhead harness. That should have been my first clue. When I put on the headset, I saw myself sitting in an airplane holding a up a phone playing a Twice music video. Then a flight attendant beckoned me and I followed her towards the plane door (for some unknown reason), which opened to reveal we were up in the clouds.

And that's when the madness began, and I descended into a psychedelic, often-terrifying journey that was basically a trippy K-pop music video showcasing Seoul's hotspots. As I slid up and down simulated environments from ski slopes to roller-coaster tracks, the chair I was in spun within the hamster wheel in tandem with what I was seeing while fans blew wind in my face. It was a well-executed experience that had me in tears of overstimulation by the end.

For now, the people and scenes in the video are rendered in cartoonish 3D, but a KT rep tells Engadget that the goal is to eventually use actual photographic images. If KT is able to stream such a graphics-intensive clip over 5G by 2017, it'll be an impressive feat. But the question then is: Do people really need to be riding faux roller-coasters outside of their homes (or anywhere they'll use 5G instead of WiFi, anyway)?

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