The vengeful God in another world is me?! Wasn't it just a game?!

‘How did this happen’
The young man, practically a boy, looked at the scene in front of him. In just one glance it was possible to see dozens of people, more closely he was sure there could be hundreds or thousands of people prostrating themselves in front of him. From the center of the city square to the adjacent streets in front of the temple, with a frightening similarity to what happened in the Vatican when the Pope gave a speech.
The young man sitting on a throne too big for him, inside a marble temple he could see expressions of happiness, reverence, gratitude and in some a small hint of fear. Not that he paid much attention to the others, his attention was mainly drawn to the group directly below the throne.
This group was made up of people of various ages, from old men with gray and wrinkled hair, but with strangely healthy bodies and postures upright like poles, to young people of various ages including children. What this group in particular had in common was their expression, which could only be described as fanatical as they looked at the young man. The only thing that was going on in the young man's head, with all this excessive attention, was simply...
‘How did things get like this?!!!! I was just playing a game!!!!’
In a room in an ordinary apartment, in an ordinary city. A seemingly ordinary young man could be seen lying in bed with a cell phone on his chest. The cell phone was on and showing scenes from what appeared to be a game.
With a small and intriguing coincidence that the young man sitting on a huge throne inside a marble temple was completely identical to the sleeping young man.
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Thanks to ImagineArt for the image