シスター・プリンセス
"Dengeki G's Magazine" often hosts reader participation games whose outcome is directly influenced by the people who read the magazine. The length of these games vary; some can go on for years, while others end in less than a year. How long a game lasts is decided on how popular the game is among the readers and how many readers participate. At least one game has been running in the magazine since the first issue except during the time between the December 1998 and February 1999 issues when "Ojōsama Express" ended and "Sister Princess" began, and again with the November 2005 issue between when "Futakoi" ended and "2/3 Ai no Kyōkaisen" began. "Love Live!" is the longest-running game, running since July 2010.