There are 5 books in the The Wraith's Haunt - A litRPG series series. The newest book is Nightmare Kingdom .

Dark forces have extended Edward Wright an offer of incredible power at a terrible cost...

...and Edward has chosen to make them regret it.
 
When Edward is swept into the world of Ivalis as a Dungeon Lord, the Dark's most powerful servant, he has no servitude in mind. He'll oppose…
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2
Otherworldly Powers

By Hugo Huesca , Josiah Davis (editor),

Book cover of Otherworldly Powers
Dark forces are threatening everything that Dungeon Lord Edward Wright cares about... and they don't expect what they're about to get. Only a few weeks have passed since the Battle of Burrova, and Edward and his friends are busier than ever improving the Haunt and protecting the surviving villagers. Sadly,…

3
Abominable Creatures

By Hugo Huesca , Josiah Davis (editor),

Book cover of Abominable Creatures
The Light strives to purify the kingdom of Starevos from evil... and only Dungeon Lord Edward Wright stands in their way.The Heroes of the Militant Church, led by Inquisitor Gallio, scour the forest in search of the Haunt, while Ed desperately attempts to uncover the secret behind the Heroes' origin.Can…