The essence of all Infocom interactive fiction is solving problems. The purpose of InvisiClues hint booklets is to maximize your enjoyment of the game by giving you only those hints that you need to continue playing and complete the game. The invisible hints generally progress from a gentle nudge in the right direction to a full answer. The questions, which naturally have to be visible, have been worded to give away as little as possible. You should not use the presence or absence of a question on a certain topic as an indication of importance, and you should not assume that long answers are associated with important questions. This booklet includes dummy questions and answers in order to minimize this problem.

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InvisiClues were hint booklets sold by Infocom to help players solve puzzles in their interactive fiction computer games. When the number of requests proved unmanageable, the Zork Users Group began a pay-per-hint telephone system. The invention of InvisiClues replaced this system and was revolutionary: a player could often buy a hint book at the same time and at the same location as the game itself.

Questions relating to the game were printed in the book, for example, the InvisiClues for Zork I [2] contained the question "How can I kill the songbird?

The contents of each box could be revealed by using a highlighter-like marker that came with the book. To discourage players from accidentally learning what awaited by reading all the questions, each booklet contained a number of plausible-sounding "fake" questions. Revealing these answers usually resulted in a mild scolding.

Several "non-puzzles" also had questions, such as the songbird example used above. Even the answers to real questions began with vague hints, so a player could choose to stop short of getting explicit solutions to the puzzles. The InvisiClues books were very popular. Richard E. These were just select InvisiClues questions from a couple of newer games, with answers written in a simple cryptogram.

InvisiClues books were almost always packaged with the navigation map for the same given game. Though InvisiClues, like the games themselves, are no longer available, a few Internet sites have recreated the booklets.

Typically, either all the answers are printed normally on the site or the user must "highlight" a section by clicking and dragging the mouse to reveal the hints. Some of the hints were missing There were many errors, such as misspellings, mis-capitalizations, formatting issues, and punctuation errors. However, there was a pay-per-minute card included.



The books themselves were mostly blank; they listed only the questions, and then a blank area beneath each question that you would color in with the InvisiPen, thus revealing the hints. The yellow marker, when dragged across the white ink, would illuminate the letters in a white-on-yellow area that seemed to fade after only a few months, mostly due to the moisture of the marker sully ing the paper of the pages. The pens themsevles were inevitably lost by adolescent Infocom gamer s, and a variety of replacements were used. Sometimes flourescent yellow highlighter s would work; sometimes it would be steam from an iron; blacklight worked sometimes, depending on the condition of the book and whether the hint area had already been colored in by the InvisiPen. An example of a typical hint, in this case for the original Zork , looked like this, prior to the intervention of the InvisiPen: Q4. Is the nest useful for anything?



Here it is depicted running on a modern Z-machine interpreter. Zork I was released originally for the TRS in Licklider , Chris Reeve, and Al Vezza. Whereas most computer games of the era would achieve initial success and then suffer a significant drop-off in sales, Infocom titles continued to sell for years and years. Employee Tim Anderson said of their situation, "It was phenomenal — we had a basement that just printed money. We sell to the minority that does read". Berez stated that "there is no noticeable correlation between graphics machines and our penetration.


Tejind The questions, which naturally have to be visible, have been worded to give away as little as possible. From Wikipedia, the free encyclopedia. Delivering user-friendly support enriched with additional customer benefits. InvisiClues Video game culture Infocom. View profile View wishlist Start conversation Invite to friends Invite to friends Accept invitation Accept invitation Pending invitation Apparently somebody from the university in my city went through the trouble of copying them in their entirety and posting them online, what a guy.


The Infocom Fact Sheet by P. Doherty with a comprehensive list of all Infocom releases About this page A couple of years ago, two little collections known as The Lost Treasures of Infocom, parts 1 and 2 were published. Everything Infocom released in just two collections -- seemed too good to be true. And it was, in a number of ways. First, the collection was incomplete -- Leather Goddesses was not included. Second, no feelies -- no plastic palm, no AMFV pen, no Wishbringer stone, no microscopic space fleet

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