Megumu Aya

This book is about a programmer named Suzuki that gets sucked into an alternate world. It gets up to chapter 6 of the series. Most of the series is world building for this alternate land that is based on an RPG. Suzuki dubs himself Satou and passes himself off as a peddler. At the beginning he is weak, but pretty much immediately he uses a spell to conquer an entire area and attempts to live comfortably with his overpowered skills.

Satou enters The Cradle and finds the Undead King. It's pretty good. The Homunculi are silly and make for good text entertainment in what they say.

Another installment in this Parallel world manga shows Satou being kind to many. Once again, I really enjoy this kind of thing, so I might be biased. In general, Satou merely gets new party members and escapes a Labyrinth.

The minute I started reading I was hooked. It's fabulous. I'm a major gamer myself so this was really awesome to read. I knew all the gaming terms.