Ports
Emerald Dragon was Glodia's first and only real hit (though some might call Zavas a hit), and the game it's known for. From its initial release on PC-88 in 1989, it was ported to six different platforms, among those, the three Japanese computers: PC-98, X68000 and, later, FM-TOWNS. It was also ported to the MSX. Different companies did the different ports, the port which has been played most the later years is obviously the SFC port, by Media Works, followed by the Right Stuff-made PC-Engine version. This is sad, as this port should be by far the worst.
Audio
Other things which might happen together with a lot of ports, is the making of a lot of soundtracks. There were released three Emerald Dragon soundtracks: Glodia Music Vol. 1 - All Sounds of Emerald Dragon (FM-TOWNS), Electric Shock Library - Emerald Dragon (PC-Engine), and Electric Shock Library Special - Emerald Dragon SFC Game Music (SFC). A lot of cds carried the name Emerald Dragon, but only these three were real soundtracks, the other cds were either singles, drama albums or image albums.
In 1995, it got it's own "Radio Drama", released on 5 cds, its musical themes were composed by Risa Ohki, most famous among Game Music listeners and RPG lovers alike as the songstress of the two Final Fantasy Vocal Collections, Pray and Love Will Grow. The Radio Drama was a kind of port as well, as it told the story of Emerald Dragon. For those who only wanted the music, DATAM released two singles with the Radio Drama themes, one with the Opening and Ending, one with the filler themes. In December 1995, the last Emerald Dragon soundware hit the market, Voice from Emerald Dragon, which was an image album, once again sung by Risa Ohki.
Staff
Since Emerald Dragon was ported to so many systems, it's pretty clear that the Staff wouldn't be the same for all of them. The main composer, Nobuhito Koise used his alias Hiromi Fukuda in some of the ports, to confuse perhaps?
No sequel was ever made to Emerald Dragon, that makes the game very unique. Most successfull Japanese RPGs get sequels, some of them series. An explanation would be the staff. After Emerald Dragon, Glodia continued to develop games, and their next game became the rather successfull Vain Dream. But Vain Dream only kept 3 of the Emerald Dragon staffers! Did Emerald Dragon stop because all the employees disapeared?