The Many Ways To Play Colossal Cave Adventure After Nearly Half A Century

October 27, 2023 by Maya Posch 15 Comments

Born from a passion for caving and the wish to turn this into a digital adventure for all ages, Colossal Cave Adventure has grown from its quiet introduction in 1976 by William Crowther into the expanded game that inspired countless others to develop their own take on the genre, eventually leading to the realistically rendered graphical adventures we can play today. Yet even Colossal Cave Adventure has recently got a refresh in the form of a 3D graphical version, which has led [Bryan Lunduke] to take a look at how to best revisit the original text adventure.

Your Colossal Cave Adventure awaits... (Credit: Bryan Lunduke) — Your Colossal Cave Adventure awaits… (Credit: Bryan Lunduke)

For those who are on Linux or a BSD system, the easiest way is to hop over to the package manager and install Colossal Cave Adventure straight away with the package bsdgames on Debian-based systems, or colossal-cave-adventure on others. A port by Eric S. Raymond of the 1995 version of the game can also be found as Open Adventure, and there’s a 1990-era DOS version you can experience on real hardware or even in a browser window, if that’s your thing. Or get it for your Amiga, Macintosh or OS/2. These days you can even get ready-to-use maps of the entire cave and surroundings, which along with walkthroughs can make things far too easy. Continue reading “The Many Ways To Play Colossal Cave Adventure After Nearly Half A Century” →

Long-Distance Gaming Over Packet Radio

March 27, 2023 by Bryan Cockfield 25 Comments

The amateur radio community often gets stereotyped as a hobby with a minimum age requirement around 70, gatekeeping airwaves from those with less experience or simply ignoring unfamiliar beginners. While there is a small amount of truth to this on some local repeaters or specific frequencies, the spectrum is big enough to easily ignore those types and explore the hobby without worry (provided you are properly licensed). One of the best examples of this we’ve seen recently of esoteric radio use is this method of using packet radio to play a game of Colossal Cave Adventure.

Packet radio is a method by which digital information can be sent out over the air to nodes, which are programmed to receive these transmissions and act on them. Typically this involves something like email or SMS messaging, so playing a text-based game over the air is not too much different than its intended use. For this build, [GlassTTY] aka [G6AML] is using a Kenwood TH-D72 which receives the packets from a Mac computer. It broadcasts these packets to his node, which receives these packets and sends them to a PDP-11 running the game. Information is then sent back to the Kenwood and attached Mac in much the same way as a standard Internet connection.

The unique features of packet radio make it both an interesting and useful niche within the ham radio community, allowing for all kinds of uses where data transmission might otherwise be infeasible or impossible. A common use case is APRS, which is often used on VHF bands to send weather and position information out, but there are plenty of other uses for it as well.

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Zork And The Z-Machine: Bringing The Mainframe To 8-bit Home Computers

May 22, 2019 by Maya Posch 30 Comments

Computer games have been around about as long as computers have. And though it may be hard to believe, Zork, a text-based adventure game, was the Fortnite of its time. But Zork is more than that. For portability and size reasons, Zork itself is written in Zork Implementation Language (ZIL), makes heavy use of the brand-new concept of object-oriented programming, and runs on a virtual machine. All this back in 1979. They used every trick in the book to pack as much of the Underground Empire into computers that had only 32 kB of RAM. But more even more than a technological tour de force, Zork is an unmissable milestone in the history of computer gaming. But it didn’t spring up out of nowhere.

The computer revolution had just taken a fierce hold during the second World War, and showed no sign of subsiding during the 1950s and 1960s. More affordable computer systems were becoming available for purchase by businesses as well as universities. MIT’s Laboratory for Computer Science (LCS) was fortunate to have ties to ARPA, which gave MIT’s LCS and AI labs (formerly part of Project MAC) access to considerable computing resources, mostly in the form of DEC PDP systems.

The result: students at the MIT Dynamic Modeling Group (part of LCS) having access to a PDP-10 KA10 mainframe — heavy iron at the time. Though this PDP-10 was the original 1968 model with discrete transistor Flip Chip modules and wire-wrapping, it had been heavily modified, adding virtual memory and paging support to expand the original 1,152 kB of core memory. Running the MIT-developed Incompatible Timesharing System (ITS) OS, it was a highly capable multi-user system.

Naturally, it got mostly used for playing games.
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