You can now download the source code for all Infocom text adventure classics - Yes, The Hitchhiker's Guide to the Galaxy and Zork are both included.

Yes as mentioned here.

Also you can bulid the games with zilf!

C:\temp\zilf-0.8\zork1-master>..\bin\zilf zork1.zil

ZILF 0.8 built 3/19/2017 1:34:17 PM

Renovated ZORK I: The Great Underground Empire

[warning MDL0417] C:\temp\zilf-0.8\zork1-master\GCLOCK.zil:26: ROUTINE: only 3 routine arguments allowed in V3, so last 2 "OPT" arguments will never be passed

in INSERT-FILE called at zork1.zil:29

[warning ZIL0502] C:\temp\zilf-0.8\zork1-master\1ACTIONS.zil:3338: RETURN value ignored: block is in void context

2 warnings

C:\temp\zilf-0.8\zork1-master>..\bin\zapf zork1.zap

ZAPF 0.8

Reading zork1.zap

Reading zork1_freq.zap

Reading zork1_data.zap

Reading zork1_str.zap

Measuring..

Assembling

Wrote 97420 bytes to zork1.z3

And yes, it works!

C:\temp\zilf-0.8\zork1-master>..\i\infocom.exe zork1.z3

ZORK I: The Great Underground Empire

Infocom interactive fiction - a fantasy story

Copyright (c) 1981, 1982, 1983, 1984, 1985, 1986 Infocom, Inc. All rights

reserved.

ZORK is a registered trademark of Infocom, Inc.

Release 0 / Serial number 190419

West of House

You are standing in an open field west of a white house, with a boarded front

door.

There is a small mailbox here.

West of House Score: 0/0

>

Wowee!!

Some notes:

There are unfinished and unreleased games in there.

Try the abyss.

Checkpoint has a compiled alpha version of Journey. You will need to compile the code to try playing spy.

I think this is the first time the existence of Mini-Zork II has been confirmed otherwise? Also the repos were just updated to add the solid gold versions woo.

In the mini zork the assembler source code is in there.