Dangerous Seed

From Sega Retro


DangerousSeed MDTitleScreen.png
Dangerous Seed
System(s): Sega Mega Drive
Publisher: Namco
Original system(s): Namco System I
Sound driver: SMPS Z80
Genre: Shoot-'em-Up

Number of players: 1
Release Date RRP Code
Sega Mega Drive
¥5,800 T-14033

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Dangerous Seed (デンジャラスシード) is a 1989 arcade shoot-'em-up by Namco ported to the Sega Mega Drive in 1990. Both versions were released exclusively in Japan.


The Moon Diver is a ship consisting of three sub-ships, sometimes called wings: Alpha, Beta, and Gamma. You must stop an alien invasion whose base is Danger Seed by going through several "tubes;" however before the game starts Beta and Gamma break off and you must begin with Alpha alone.


A shoots a normal shot which can be rapidfired. B shoots a bomb (you have a limited supply of bombs). As you pass through each tube, your ship collects wings; use C to change the arrangement of wings. Powerups are collected as in most shmups.

The game features at least one alternative path, which can be accessed by letting the boss battle after assembline Alpha, Beta and Gamma time out. The boss will flee, and a new path will be taken, with different stage layouts and bosses.


Dangerous Seed began life as a Namco System 1 arcade title, and received numerous cutbacks during its transition to Mega Drive hardware. Graphics were simplified across the board, with less detailed stages and simpler cutscenes. Bosses no longer split into pieces when taking damage, and fewer objects are drawn on screen during gameplay. Curiously the colour schemes were changed as well, and horizontal scrolling was removed.

To compensate, the Mega Drive version features additional stages (and extends the arcade levels) and three weapon types (normal, wave, and laser). and the soundtrack was remixed, becoming more upbeat in the process.

Production credits

  • Game Designer: Chitose, Red Bunny
  • Character Designer: Red Bunny, Little Dragon, Yodomo‑chan, Nori‑Nori, P‑Bug, Shin‑chan
  • Programmer: M.Y.Hummer, Comeya, Yanagiya
  • Music Composer: Yosiquin, Neumann A.H, Shimokyara, Totsukurzwell
  • Original Game: S.Shino, Y.Shimz, Sam, Naun
  • Director: Chitose, Crazy Horse

Magazine articles

Main article: Dangerous Seed/Magazine articles.

Promotional material

Print advert in Beep! MegaDrive (JP) #1991-01: "January 1991" (1990-12-08)

Physical scans

Sega Retro Average 
Publication Score Source
65 [1]
66 [2]
50 [3]
70 [4]
70 №13, p123
50 №5, p91
40 [5]
68 [6]
40 [7]
83 [8]
86 №18, p64
Sega Mega Drive
Based on
11 reviews

Mega Drive, JP
DangerousSeed MD JP Box.jpg
DangerousSeed MD JP CartTop.jpg
DangerousSeed MD JP Cart Back.jpgDangerousseed md jp cart.jpg

Technical information

ROM dump status

System Hash Size Build Date Source Comments
Sega Mega Drive
CRC32 a2990031
MD5 f7125fcd53073459a6b9b4e57ff71257
SHA-1 32b2b1de0947fb713787020679efacffd29ec04e
512kB 1990-10 Cartridge (JP)


Dangerous Seed
DangerousSeed MDTitleScreen.png

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