I just received the InvisiClue book for the Infocom Trinity interactive fiction game. I thought any highlighter pen would allow the clues to be viewable, but it did not work. I think I need a special kind of pen/marker to see the clues. Does anyone know which markers/pens work with the InvisiClues books?
Anonymous
User login
Please support the defense of Ukraine.
Direct or via Unclutter App
Active forum topics
Recent content
Navigation
No Ads.
No Trackers.
No Social Media.
All Content Locally Hosted.
Built on Free Software.
We have complied with zero government requests for information.
Try some vinegar in a cotton bud. In that era, a lot of systems used vinegar as the reactant for "invisible ink" pens.
Chesh
I tried the vinegar suggestion and it did not make the clues visible. Along the lines of your suggestion I tried a UV light that I had on my desk. When you shine the UV light on the blank text area you can see the clue text. It's a little faint, but readable. Unfortunately, I was not able to see the clues that had been "highlighted" by the prior owner of the book with the UV light. I did find a text file on the web that had all the clues typed out. I can council this text file when I get stuck and the UV light does not work. Thanks for the help.
Invisiclues was interchangeable with the orange invisible-ink pens used by Lee Publications in their Yes & Know and Guess & Show activity books.
It should also work with the green pen for their combination Invisible Ink & Magic Pen Painting books.
It won't work with the purple pen for their Magic Pen Painting books. The purple pen was just a wetting agent, not invisible ink developer.
Unfortunately Lee Publications is out of business, so new books & pens are becoming scarce. I see bad reviews for them on Amazon (secondhand, missing pen, etc.) but some eBay sellers claim to have shrinkwrapped originals.