With game-like do you mean VR like Sword Art Online?
If yes, you should try out 1/2 Prince ( http://www.mangago.me/read-manga/1_2_prince/) if you don't know it already. It's not really that famous (as far as I know) since it's a taiwanese manhua. But I really like it :D One of my favs.
Then there's Log Horizon ( http://www.mangago.me/read-manga/log_horizon/) and Overlord ( http://www.mangago.me/read-manga/overlord/) too.
Can you guys recommend some fantasy or game-like mangas? I have read quite a few and enjoy them. If you know any worth reading, please tell me! It's okay if there's reincarnation or summoning or stuff like that. I enjoy OP characters too. (=・ω・=)