My first real VR experience was PlayStation VR Worlds and my mind immediately exploded. It was amazing. Before that, I'd tried using cheap cell phone VR teach and I was expecting more of that. With PSVR, it was like I could reach out and touch stuff.... And when I reached out, I could almost touch stuff. It reached in my hands as if it was real.
What I played first, I don't remember. That first day was just a blur of sharks, gunfire, Batarangs, zombies, and happiness.