Hack 1.0.1

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Hack 1.0.1 is the second public release of Hack. Andries Brouwer published it to the (now-obsolete) Usenet newsgroup net.sources in January 1985.


Hack 1.0.1 first appeared as a patch against the Hack 1.0 sources. Google Groups has archived this patch at [1]. Because one part of the original Hack 1.0 posting is not present at Google, the files in question must either be reconstructed before applying the patch, or obtained from elsewhere (see Hack 1.0#Availability).

Ali Harlow[2] has a Hack 1.0.1 distribution at [3], which does not have the benefit of the recovered original Part 15.

Significant changes

  • The pickup (,), option (o) and self-teleport (control-T) commands first appear in this version.
  • The HACKOPTIONS environment variable is recognized for the first time.
  • The tag "(with amulet)" now appears in the record file entry when an adventurer has the Amulet of Yendor in his possession at the end of the game.
  • Vault teleporters and the "ad aerarium" inscription appear for the first time.
  • The lurker above is now "'" instead of "~".

The adventurer

The player may choose a Tourist, a Speleologist, a Fighter, a Knight, a Cave-man, or a Wizard. No option to play as female is available.

The adventurer has experience, hit points, armor class, and strength. He may advance to experience level 14.

The initial pet is a little dog.

Dungeon features

The dungeon in Hack 1.0.1 has no branches; there is one way up and one way down. The first 25 levels or so consist of rooms, and beyond that, the adventurer encounters mazes.

Special rooms are shops, treasure zoos, and vaults. If the player's login name is "david", David's Treasure Zoo appears much more frequently.

Traps are:

The Amulet of Yendor is found under a boulder in a maze level. The Wizard of Yendor does not appear in Hack 1.0.1.


Hack 1.0.1 adds no new monsters. The lurker above is now "'" instead of "~".

The following monsters may be encountered:

Name Symbol Notes
acid blob a  
bat B  
centaur C  
chameleon :  
cockatrice c Stoning by hissing is an instadeath
demon &  
dog d  
dragon D As the modern red dragon
ettin e  
floating eye E  
fog cloud f  
freezing sphere F  
gelatinous cube g  
ghost (space)  
giant ant A  
giant beetle b  
giant rat r  
gnome G  
guard @  
hobgoblin H  
homunculus h  
imp i  
jackal J  
jaguar j  
killer bee k  
kobold K  
large dog d  
leocrotta l  
leprechaun L  
little dog d  
long worm w if NOWORM not defined at compile time
lurker above '  
mimic M  
minotaur m  
nurse n  
nymph N  
orc O  
owlbear o  
piercer p  
purple worm P  
quasit Q  
quivering blob q  
rust monster R Reduces enchantment rather than truly rusting
scorpion s  
shopkeeper @  
snake S  
stalker I  
tengu t  
trapper ,  
troll T  
umber hulk U  
unicorn u  
vampire V  
violet fungi v  
wraith W  
wumpus w if NOWORM defined at compile time
xan x  
xorn X  
yellow light y  
yeti Y  
zombie Z  
zruty z  


No new objects are introduced in Hack 1.0.1.


Hack 1.0.1 has only one artifact, Orcrist. Any weapon may be named Orcrist and will do d10 extra points damage to orcs. There can even be more than one Orcrist.


Only the Amulet of Yendor and the cheap plastic imitation exist in Hack 1.0.1.


Food items in Hack 1.0.1 are:

The tin did not contain the remains of monsters, but rather a randomly-chosen food such as peaches or, if the adventurer is lucky, spinach.

The dead lizard was a found object rather than a corpse; live lizards did not exist in Hack 1.0.1. It could reduce confusion, but had no effect on cockatrices.


Weapons in Hack 1.0.1 are:


Tools in Hack 1.0.1 are:

The ice box is the only container. Then as now, it preserved corpses, and was generally too heavy (and too rare) to be useful for inventory management.


Armor items in Hack 1.0.1 are:


Potions in Hack 1.0.1 are:


Scrolls in Hack 1.0.1 are:

The scroll of damage weapon acts as the modern scroll of enchant weapon does when cursed. The scroll of genocide acts, in all cases, as the modern blessed scroll; but most symbols refer to only one monster anyway.


Wands in Hack 1.0.1 are:


Rings in Hack 1.0.1 are:

Because charisma does not exist in Hack 1.0.1, the ring of adornment is a useless item.


Gems in Hack 1.0.1 are:

and worthless pieces of blue, red, yellow, and green glass.

Other items

Other items not appearing in the above categories are:

It is not possible to pick up an iron chain, nor can they be generated from iron golems, because these do not exist in Hack 1.0.1.

Derivative versions

Hack 1.0.1 inspired two ports to other operating systems, PC Hack 1.0.1 and AmigaHack 1.0.1.