The following is a list of episodes for the Magical Girls Lyrical Nanoha anime franchise, which spawned from the Triangle Heart eroge series.
The second season, Magical Girl Lyrical Nanoha A's, aired between October 1, 2005 and December 24, 2005, once again produced by Seven Arcs but now directed by Keizō Kusakawa.
The third season, Magical Girl Lyrical Nanoha Strikers, aired in Japan between April 1, 2007 and September 24, 2007, once again directed by Kusakawa at Seven Arcs.
An anime based on the Magical Girl Lyrical Nanoha ViVid manga series written by Masaki Tsuzuki aired in Japan between April 3, 2015 and June 19, 2015, directed by Yuuki Itoh at A-1 Pictures.
A spin-off series titled ViVid Strike!, directed by Junji Nishimura at Seven Arcs, aired in Japan between October 2, 2016 and December 17, 2016 and was simulcast in the United Kingdom by Amazon Video.