Simulation - a book based off video games

Matthew was a regular, confused and curious teenage boy (16), he wanted to be an author or possibly an ornithologist (bird caretaker) or a music artist. He loved relaxing in his room or playing games on his monitor, but what happens when he normally lives his life and finds out a terrible realization?

Yes, this story is kinda based off of gasa4. It's my favourite game and I was itching to make this story, if you don't like the story please don't read and move to another book instead of hating it.