Haganai
The first "Boku wa Tomodachi ga Sukunai" manga series, written and illustrated by Itachi, has been published in Media Factory's "Monthly Comic Alive" magazine since its May 2010 issue, released on March 27, 2010. Additionally, the series has been collected in 14 "tankōbon" volumes. Seven Seas Entertainment has licensed the first manga series in North America under the title "Haganai: I Don't Have Many Friends".
Joker Game
The original novel, "Joker Game", published by Kadokawa Shoten on August 28, 2008, is a collection of five short stories written by Koji Yanagi. Three of them were published directly in the novel, but two of them—"Joker Game" and "Robinson"—were first published in Kadokawa Shoten mystery magazine "Yasei Jidai" on its November 2007 and May 2008 issues respectively. The same happened in the following novels; "Double Joker", released on August 29, 2009, featured five stories that were previously serialized in "Yasei Jidai", an original story—"Black Bird"–and a story that was slated to the magazine October 2009 issue. "Paradise Lost", released on March 23, 2012, contained five stories published between "Yasei Jidai"s July 2011 and March 2012 issues. Released on January 17, 2015, the four stories of "Last Waltz" had previously been published between "Yasei Jidai"s September 2014 and January 2015 issues.