Planetarian: The Reverie of a Little Planet
"Planetarian" was released on November 29, 2004 via download over the Internet playable on Windows PCs, and was first made available only to Yahoo! Japan Broadband users. The game was opened up for general sale on December 6, 2004. Key released a CD-ROM version for Windows PCs on April 28, 2006 in limited and regular editions. An updated version of "Planetarian" compatible for Windows Vista PCs was released by Key on July 31, 2009 in a box set containing five other Key visual novels called Key 10th Memorial Box. Another updated version compatible for Windows 7 PCs called "Planetarian: The Reverie of a Little Planet Memorial Edition" was released on April 30, 2010. The "Memorial Edition" also came bundled with the three previously released "Planetarian" drama CDs. An HD edition for Windows was released on July 29, 2016. "Planetarian" was released on Steam by Sekai Project in English for Windows on September 12, 2014, with later support planned for macOS and Linux devices. The Steam release was updated on September 17, 2014 to allow the user to switch to the original Japanese version of the game.
Two Planets
Two Planets (, lit. "On Two Planets", 1897) is an influential science fiction novel postulating intelligent life on Mars by Kurd Lasswitz. It was first published in hardcover by Felber in two volumes in 1897; there have been many editions since, including abridgements by the author's son Erich Lasswitz (Cassianeum, 1948) and Burckhardt Kiegeland and Martin Molitor (Verlag Heinrich Scheffler, 1969). The 1948 abridgement, with "incidental parts" of the text taken from the 1969 version, was the basis of the first translation into English by Hans H. Rudnick, published in hardcover by Southern Illinois University Press in 1971. A paperback edition followed from Popular Library in 1976.