From Sega Retro


Gemfire MDTitleScreen.png
System(s): Sega Mega Drive
Publisher: Koei
Original system(s): JP Home Computers
Genre: Simulation

Number of players: 1-2
Release Date RRP Code
Sega Mega Drive
¥9,800 T-76063
Sega Mega Drive
$? T-76036

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Royal Blood (ロイヤルブラッド) is a 1991 strategy game by Koei for various Japanese computers from its "Imagination Series." It has been ported to many other systems and its international releases renamed Gemfire in those regions. A port to the Sega Mega Drive was released in the US and Japan in 1992.


Ishmeria is an island inhabited by humans and mythical creatures guarded by six magicians. A Fire Dragon challenged them, and the battle that ensued resulted in a curse being set on magic itself: whoever wears the Crown of Seven Jewels has full control of the island's magic. That person is King Eselred, whose tyranny led his daughter Robyn to take the jewels from the crown, which hold the magic power, and scatter them around. Now, the six wizards, each united with six noble families of Ishmeria, and Eselred, united with the Fire Dragon, must race to get the jewels first — should they fall back into Eselred's hands, all hope for the Ishmeria's freedom will be lost.


There are several scenarios to play. In each, you control one of the six noble families, each in control of a country on the island. The game is played by taking control of the country as it fights neighboring countries, develops its own land, and makes diplomatic agreements toward the goal.


Localised names

Also known as
Language Localised Name English Translation
English (US) Gemfire Gemfire
Japanese ロイヤルブラッド Royal Blood

Magazine articles

Main article: Gemfire/Magazine articles.

Promotional material

BeepMD JP 1992-07.pdf

Print advert in Beep! MegaDrive (JP) #1992-07: "July 1992" (1992-06-08)

BeepMD JP 1992-08.pdf

Print advert in Beep! MegaDrive (JP) #1992-08: "August 1992" (1992-07-08)

Physical scans

Sega Retro Average 
Publication Score Source
63 [2]
71 [3]
80 [4]
70 №1992-07, p38
76 [5]
59 [6]
84 [7]
Sega Mega Drive
Based on
7 reviews

Mega Drive, US
Gemfire MD US Box.jpg
Mega Drive, JP
RoyalBlood MD JP Box.jpg
Royalblood MD JP CartTop.jpg
RoyalBlood MD JP Cart.jpg

Technical information

ROM dump status

System Hash Size Build Date Source Comments
Sega Mega Drive
CRC32 3d36135b
MD5 952ad745fb759b48bfa73a04ec37bb71
SHA-1 98da5fdec3147edb75210ccf662601e502e23c31
1MB 1992-03 Cartridge (US)
Sega Mega Drive
CRC32 0e0107f1
MD5 69f4c1571e21499007fecf4de5d741e3
SHA-1 914f684f085927257020ffaa1ca536ec057e1603
1MB 1992-03 Cartridge (JP)


NEC Retro has more information related to Royal Blood.
Gemfire MDTitleScreen.png

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