I don't know if this was the manga you are looking for:
http://www.mangago.me/read-manga/invoke/
Unfortunately it's discontinued...so we can never ever finish this manga ;_; only by imagination /cries
could also be this one http://www.mangago.me/read-manga/double_play/
Is it this one? o3o http://www.mangago.me/read-manga/distopia_mikansei_na_sekai/
Hej i was looking for that one all over after reading the search request! Don't know if the asker was looking for this one,too...
I was, so thank you very much!!!
does anyone know this yaoi manga,it about a guy who is a games creator(maybe) , he falls in love with a guy in his games , he hoping that guy was real