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These PDP-10 machine dependencies made porting of the Crowther/Woods Adventure to other platforms more difficult. Suspending a game in this manner saved an entire copy of the game program to disk, rather than just player specific data. This feature was the original basis for saving, or suspending, an adventure game.

One feature of the PDP-10 operating system was its ability to save, restore, and restart execution of a program's core memory image, even after a program terminates. This architecture was evident to the game player too, since the game only distinguished the first five characters of all the vocabulary words it understood.

And programmers could compare integers in FORTRAN directly with five character strings. Each PDP-10 word (an integer) packed five 7-bit ASCII characters in the high order 35 bits of a 36-bit word.

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The Adventure FORTRAN code took full advantage of the machine dependent, 36-bit, architecture of the PDP-10. Like Crowther's original game, Woods' game also executes with all its data in memory, but required somewhat less core memory (42k words) than Crowther's game. The data consisted of 140 map locations, 293 vocabulary words, 53 objects, travel tables, and miscellaneous messages. His work expanded Crowther's game to approximately 3000 lines of code, and 1800 lines of data. Woods also developed his game in FORTRAN for the PDP-10 (see the source code). It required about 60k words (nearly 300kB) of core memory, which was a significant amount for PDP-10/KA systems running with only 128k words. On the PDP-10, the program loads and executes with all its game data in memory. The data included text for 79 map locations, 193 vocabulary words, travel tables, and miscellaneous messages. TechnologyĬrowther's original game consisted of about 700 lines of FORTRAN code (see the original source code), with about another 700 lines of data, written for BBN's PDP-10 timesharing computer.

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When Roberta Williams and her husband Ken discovered the game, and were subsequently unable to find anything similar, they were inspired to create their own software house, founding On-Line Software (later Sierra Online, and then Sierra Entertainment), which created the first graphical adventure game ( Mystery House), and quickly became a dominant player in the entertainment software market for the next two decades, creating successful adventures such as King's Quest, Space Quest, and Leisure Suit Larry. A big fan of Tolkien, he introduced additional fantasy elements, such as elves and a troll. The version that is best known today was the result of a collaboration with Don Woods, a graduate student who discovered the game on a computer at Stanford University and made significant expansions and improvements, with Crowther's blessing. Version included magic words, dwarves, and so on.Crowther/Woods Adventure (1977) running on a PDP-10 Will Crowther's original version was a game - Crowther's original Original Fortran source code of Adventure has been found, showing that (Digital Humanities Quarterly, Summer 2007, Volume 1 Number 2)įor a long time the original code had been lost, but 'Somewhere Nearby is Colossal Cave: Examining Will Crowther's Original 'Adventure' in Code and in Kentucky' by If you're interested in the history of Adventure,Ī lot of background on the original Adventure game (and the There are lots of Z-machine players out there,įor much, much more information, as well as downloads. To play this, you need a Z-machine player.

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(This is Release 9 / Serial number 060321.) Version ported to Inform by Graham Nelson,īased on Dave Baggett's TADS reconstruction 'Colossal Cave Revisited'.

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You can download many different versions of Adventure at no charge.Īdventure aka Colossal Cave. So any final walkthrough like this will mix up puzzle solutions. You only have a limited amount of time with the lamp,

Outside (start) - I lost my old map of this, and didn't work hard on this one.

I've won the 350-point game, and thought I'd share my maps and solution. This is a brief page about the original text adventure game, Adventure. Adventure Adventure (Text Adventure / Interactive Fiction) - the Colossal Cave