First released in December 21, 2006 for the PlayStation 2, Secret of Evangelion is based on the events of TV series and the movie "The End of Evangelion". It follows the original character, Kyoya Kenzaki, discovering secrets of the Human Instrumentality Project and other events regarding Evangelion Unit-04. Depending on the choices made, there are 10 different endings.

[Edited from Evangelion Wiki]