NunuXD
I think you are greatly underestimating how much popularity a game where you could enter the game world would get. You are acting like this is a normal game that you can find anywhere but they are literally transported to another world. The whole world would know about it in a couple of days. Especially when there are rewards you can win that extends life span or your strength.
Great chapter and great fanfiction! I would just recommend to review your numbers. 1k copies is way to low for the first immersive VR game ever made in the world, even without marketing. It should be hundred thousands or millions. You are no only buying the game, but also the first immersive VR experience, it doesn't matter if that is your kind of game or not, no gamer would miss this experience for only $20.