 If you liked
Re:Monster
|
 ...then you might like
Overlord
|
Similar fantasy/game based world, and powerfull protagonists. If you loke one, you're bound to like the other.
Re:Monster is similar to Overlord in some aspects including that the protagonist is a non-human who commands an army of monsters. Besides, both the protagonists are also kind of ruthless and brutal, easily taking away the lives of many humans.
However, honestly speaking, Overlord is way better than Re:Monster in terms of the details of the plots, overall structure of the story and the development of the characters.