It is a spin-off of the Umineko When They Cry murder mystery visual novel series and was originally released at Comiket 79 on December 31, 2010.

The game was ported to the Xbox 360 by Alchemist in October 2011 as Golden Fantasia X, including new characters and balance tweaks.

An append disc for the original game, titled Golden Fantasia Cross, was released at Comiket 81 on December 31, 2011.

An Xbox 360 port of the original game developed by Alchemist was released on October 6, 2011 under the title Golden Fantasia X (黄金夢想曲X, Ōgon Musōkyoku X).

In addition to the new English translation, the game's netcode was overhauled to use a "rollback" system which mitigates input delay, similar to networking middleware GGPO.

A manga adaptation titled Ōgon Musōkyoku illustrated by Junka Morozumi began serialization in the December 2011 issue of Kadokawa Shoten's Comp Ace magazine[12] and was compiled in one volume.