Wikipedia
is a free visual novel by the dōjin group stage-nana, telling the story of a terminally ill young man and woman. It was made with the NScripter engine.
The work was originally written in Japanese by Tomo Kataoka, and subsequently localized and translated into English, Chinese, French, Korean, Russian and Vietnamese by various fan translators. Unlike most fan translations, however, this was an authorised work. The author, however, was not actively involved in the translation process as it had been the case for True Remembrance. Both the original Japanese visual novel and its English version were released as free downloads over the Internet. The web edition of Narcissu has lower graphics and music quality, in order to conserve bandwidth.
Narcissu is an experimental work: it uses minimalist graphics in a very narrow window, and includes two full scripts, one accompanied by a voice track, and the other adapted to work without voices. In the English translation, different translators translated each version, to provide different perspectives on the story.