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Iron Helix

Your rating: None Average: 4.8 (6 votes)
Year released:
Download Iron_Helixtm_CD.img_.sit (367.40 MB)
For System 6.x - System 7.0 - 7.6
Download (332.71 MB)
For System 6.x - System 7.0 - 7.6
This game works with: Basilisk II,

Set far in the future, the human race is in the middle of a cold war with an alien race called the Thanatosians. During a target practice by an Earth fleet that will destroy an uninhabited planet, the heavy destroyer Jeremiah O'Brien is infected with an unknown virus that mutates the crew. No longer recognized due to the changes in their DNA, the O'Brien's security robot, simply known as "the Ship's Defender", assumes they are invaders and kills them. An apparent technical malfunction has caused the O'Brien’s computer to believe that it was in a real life war situation, and select the planet Calliope as a target for destruction. Like all of the human fleet's Cerberus-class destroyers, the O'Brien carries a weapon known as "Iron Helix", which is capable of destroying all life on a planet in a single act. An attack on Calliope, a peaceful Thanatosian planet, would cause the war to go "hot".

The player is onboard the scientific exploration ship Indiana, and is contacted by the Earth's forces in an attempt to stop the O'Brien, as it was the only ship nearby. As the ship is infected with the unknown virus, the player instead remotely-controls a zoological robot that is sent over to explore. As much of the ship's systems are locked out using DNA detectors, the robot must collect uncontaminated samples of the crew's DNA to access different secured areas onboard. The robot can also interface with dataports on the O'Brien to operate its systems, from opening doors to issuing executive commands.

A note about the downloads available from above:

External link (English version)
Download from Mega.Co.Nz
Architecture: 68k

Mac LC, Colour Classic, Mac II model, colour Performa, Centris or Quadra
4MB RAM minimum, 5MB recommended
CD-ROM drive
7MB Hard Drive space
System 6.0.7 with 32-bit QuickDraw, or Mac OS 7
256-colour (8-bit)
12" monitor or larger.

256 colours is required, reduce to 256 colours if you need to.


by CalTheOnly - 2014, August 22 - 12:22am

This game was like a virtual hide and seek adventure. Yet another I never finished.

Attila's picture
by Attila - 2010, February 21 - 2:53pm

Thanks, bertyboy! I've got it downloaded. BTW, I'd like you to contact me at "pumaconcolor AT hotmail DOT com" when you get a chance.

bertyboy's picture
by bertyboy - 2010, February 21 - 9:01am

It's a full uncompressed Toast image being uploaded just now, be done by the morning. I think I created a Stuffit-compressed OS9 Disk Copy image for the original upload to here, as well as ripping out some of the demos and other dross to fit it under the 400MB limit.

Added MU link at end of description.

Attila's picture
by Attila - 2010, February 20 - 4:51pm

No hurry, bertyboy. I'll make sure to get it downloaded so you won't have to do it again! There were so many big uploads for awhile there that I couldn't keep up. Carl alone was uploading a ton; he seems to have burned out and found something else to be occupied with--haven't seen him post in some time.

Attila's picture
by Attila - 2010, February 20 - 2:52pm

Not that there's any hurry with this one, but if anybody could provide a mirror link, that would be great. I've always been captivated with games that allow me to explore, even if it is just a little screen in the corner with some video!!

bertyboy's picture
by bertyboy - 2009, July 4 - 12:08pm

I'm sure I've played this in the last few years on my MDD, maybe even under Classic in OSX 10.3 (with monitor reduced to 256 colours). I remember it playing at it's native resolution, something about 320x240 on my 23" cinema display.

If you're playing on an old Mac, I remember it being incredibly slow on my IIci, maybe because of the 2x CD drive.

Play with the lights off for extra ambience.