Kami nomi zo Shiru Sekai, Ore no Imouto ga Konnani Kawaii Wake ga Nai Recommendations
Both are mainly focus on Dating Sim game/Visual Novel
Main character in each is deeply interested in adults game and tend to distinguish 2D and 3D world clearly
Both are about games, little sisters and the art is similar.
You would enjoy it, if you liked the other one too.
Both are comedies which feature an otaku who is addicted to dating games as a main character.
Both animes have a main character that is obsessed with anime and galge.
Both anime explore the otaku culture (more specifically the gaming aspect of it). The main characters are often shown to be playing visual novels and seemed to be addicted to them. They are also both knowledgeable when it comes to these kinds of games.
Both animes have a character who is absolutely obsessed with eroge games.
Both main characters love games and in ore no imouto ga konnani kawaii wakamga nai Ayumi's voice actor in kami nomi zo shiru sekai is the main character!
Both feature an MC that's completely engrossed in dating sims and the likes.
Both often prefer the 2D world over the 3D world.
Both have romance in it but The World God Only knows focuses on that more.
If you're into a girl beating up a guy without a real justifiable reason then this show is for you