The Narcissu 1st and 2nd editions have been Greenlit for Steam, the community process for getting new games onto Valve's Steam platform. Narcissu comes in the latest batch of 100 Greenlights on the Valve software. Narcissu is described a "a free visual novel by the dōjin group stage-nana, telling the story of a terminally ill young man and woman", according to Wikipedia.
The project page says:
Originally, the story of “Narcissu” was written by Tomo Kataoka in 2005 and released for free download on the web. Mr. Kataoka has been exceedingly generous in allowing fans across the globe to translate these two games, on the condition that they be released for free just like the originals were. Thanks to that, the original game has been translated into a number of languages, including English , French , and Chinese . Anyone who is interested in bringing this story into other languages is encouraged to give it a try, and the translation community would be happy to help.
Narcissu is powered by the open-source ONScripter engine, which is based on the already liberally-licensed NScripter but with better non-Japanese language support.
The Steam Greenlight page for this open-source creation can be found at SteamCommunity.com. This open-source greenlighting was pointed out by common Phoronix reader "RussianNeuroMancer."