From Sega Retro


Gaiares MDTitleScreen.png
System(s): Sega Mega Drive
Genre: Shoot-'em-up

Number of players: 1
Release Date RRP Code
Sega Mega Drive
¥8,400 T-49013
Sega Mega Drive
$69.95More...[1] 49066
Sega Mega Drive
? T-49013

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Gaiares (ガイアレス) is a 1990 shoot-'em-up by Telenet Japan released first for the Sega Mega Drive in the Japan and US, published by Renovation. The US version also came with a poster. It was one of the first games to use 8 Megabit instead of 4 Megabit cartridges, a big portion of that is used for cutscenes. A specific European version was planned by UbisoftMore...[3] but it did not materialise. Thereafter, the Japanese version has been officially distributed in small number (japanese shell and box with manual translated in many languages).[4]

During development it was known as Aztion (アズシオン).[5]


In the year 3000, humans have polluted Earth to such an extent that Gulfer, a group of space pirates, plan to use the pollution to fuel weapons of mass destruction. The United Star Cluster of Leezaluth feel the only way to stop this from happening is to blow the Sun up, but allows the humans one chance to save themselves: by sending Dan Dare (Diaz in Japan) in a special ship to stop Gulfer.

Aiding Dan in a special sub-ship is the TOZ System, run by Leezaluth emissary Alexis, which can steal powers from the space pirates's own ships. Should you succeed, Leezaluth will give the humans a new planet to inhabit.


A changes movement speed. B shoots. C sends Alexis out straight ahead to take the weapon of the nearest enemy. You can keep taking the same type of weapon, which will increase that weapon's strength, until the type has been maxed out. Furthermore small capsules can be picked up to wipe out all enemies on screen or to install a shield that can absorb multiple enemy hits.

Some stages feature branching paths that can be selected by flying high or low on the screen.

Production credits

  • Game Design: M.Yamamoto, K.Yokota
  • Character Design: T.Iwata, K.Yokota
  • Graphic Design: K.Yokota, T.Iwata, Y.Kuzumoto
  • Program: M.Yamamoto
  • Sound: S.Ogawa (Business Support Co., Ltd.)
  • Special Thanks: K.Fukushima, Y.Fukushima, J.Fukushima, T.Fukushima, Y.Abe, T.Kinoshita, E.Kikuchi, T.Miura, T.Matsuzawa, A.Suzuki, Y.Shimizu, K.Ohta, Y.Yamauchi, T.Umezu
(C) Telenet Japan 1990
(C) Renovation Products 1990
Source: In-game credits

Magazine articles

Main article: Gaiares/Magazine articles.

Promotional material

Main article: Gaiares/Promotional material.

Physical scans

Sega Retro Average 
Publication Score Source
68 More...[6]
69 More...[7]
60 №119, [1]
100 More...[8]
60 №1991-01, p43
79 More...[9]
84 No results[10]
89 More...[11]
84 №18, p65
Sega Mega Drive
Based on
11 reviews

Mega Drive, US
Gaiares MD US Box.jpg
Gaiares md us cart.jpg
Gaiares md us manual.pdf
Gaiares MD US Poster.jpg
Mega Drive, JP
Gaiares MD JP Box.jpg
Gaiares MD JP CartTop.jpg
Gaiares MD JP Cart.jpg
Gaiares md jp manual.pdf

Technical information

ROM dump status

System Hash Size Build Date Source Comments
Sega Mega Drive
CRC32 5d8bf68b
MD5 47e140ae1e70984e6cd638e6e8f8485f
SHA-1 f62e8be872dc116c4cc331c50ae63a63f013eb58
1MB 1990-12 Cartridge (US/JP)