The ones I linked...are basically the best of the best in the genre (in english commercially) so far. The genre is so under served so far, that people are willing to go out and personally translate the stuff that's in korean into english and share it. The 'big name' in the genre is a russian translation.
My suggestion is to read The Gam3 (the best so far in the genre in my opinion), 46 year old syndrome, and Survival World RPG, and get a 'feel' for how it goes. I'm certain you could pull this off. One thing this genre suffers from is that it runs from the tradition of Xianxia and Wuxia chinese stories, both of these story types suffer in western audiences because they suffer from two flaws, chinese novels seem to have the main character just 'get' everything. They train, but it seems to be 'you are destined for greatness...so here is something heaped upon you that makes you great, go forth and be great!' the focus seems to be on the 'doing cool shit' part of the story, and not in 'this character suffers, changes, and grows' which seems to be a focus of western story styles. The second problem of these story types (for western audiences) is that the characters become over powered...and then have no struggles! they tend to just become a collection of the character doing cool shit...which is neat and all...but it doesn't make a story (in the western market at least).
The example stories I listed have avoided these two pitfalls. The characters gain power...but they are not infinitely god like characters which mow through their opposition, neither are they static wax figurines which never change. You have shown that even when developing near god like powers for some characters (Demons, super powered beings, transdimensional travelers...even combinations thereof!) you have managed to have these characters run into real trouble and even near death experiences. Heck you have even killed off some of these super beings within your stories.
Learn some of the basic tropes of RPG's (you can do it easily by just reading those sample stories) and *boom* you are ready to roll!
One thing that has pissed off some people about this genre is "it's virtual so nothing matters". The examples I linked avoid this, the first has a virtual world...but it *very* much matters. The last two I suggested all take place in the real world. Some others in the genre have used the virtual environment as a contrast as to the real life situation of the characters and have used that to help them mentally change (one story for example has a character who is paralysed from the waist down and in the game he is a powerful physical fighter, this allows him to 'carry over' his fights in game to his emotional fights out of game).
The only tricky bit is making sure whatever tables you use still fit into the more popular e readers.