Tarn Adams (born April 17, 1978) is an American
computer game programmer, best known for his work on ''
Dwarf Fortress
''Dwarf Fortress'' (previously titled ''Slaves to Armok: God of Blood Chapter II: Dwarf Fortress'') is a construction and management simulation and roguelike indie video game created by Bay 12 Games. Available as freeware and in development si ...
.'' He has been working on the game since 2002 together with his older brother Zach. He learned programming in his childhood, and took up designing computer games as a hobby. In 2006, he quit during his first year of a
mathematics
Mathematics is a field of study that discovers and organizes methods, Mathematical theory, theories and theorems that are developed and Mathematical proof, proved for the needs of empirical sciences and mathematics itself. There are many ar ...
post doctorate at
Texas A&M University
Texas A&M University (Texas A&M, A&M, TA&M, or TAMU) is a public university, public, Land-grant university, land-grant, research university in College Station, Texas, United States. It was founded in 1876 and became the flagship institution of ...
to focus on
game development
game development (sometimes shortened to gamedev) is the process of creating a video game. It is a multidisciplinary practice, involving programming, design, art, audio, user interface, and writing. Each of those may be made up of more specialize ...
.
Early life and education
Tarn was born in
Silverdale, in the
U.S. state
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...
of
Washington
Washington most commonly refers to:
* George Washington (1732–1799), the first president of the United States
* Washington (state), a state in the Pacific Northwest of the United States
* Washington, D.C., the capital of the United States
** A ...
, in 1978. His father, Dan, worked at a
waste water treatment plant
Water treatment is any process that improves the quality of water to make it appropriate for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, inc ...
and used to work in
data management
Data management comprises all disciplines related to handling data as a valuable resource, it is the practice of managing an organization's data so it can be analyzed for decision making.
Concept
The concept of data management emerged alongsi ...
. He taught his sons the rudiments of coding at an early age and this shared interest allowed the brothers Tarn and Zach to remain close to each other despite their family's constant shifting due to their father's work. The brothers grew up playing computer games, drawing their own renditions of the randomly generated creatures they encountered, and logging their journeys in detail. In fifth grade, Tarn wrote his first animation game with Zach. Explaining his reluctance to socialize,
he said, "I was a get-home-from-school, get-on-the-computer kind of kid." Tarn stated that the main reason they started writing games was to play them themselves, and they soon began introducing complicated and unpredictable behavior to achieve more
replayability
Replay value (or, colloquially, replayability) is the potential of a video game or other media products for continued play value after its first completion. Factors that can influence perceived replay value include the game's extra characters, se ...
.
In sixth grade, they developed their first
fantasy game, called ''Dragslay'' and written in
BASIC
Basic or BASIC may refer to:
Science and technology
* BASIC, a computer programming language
* Basic (chemistry), having the properties of a base
* Basic access authentication, in HTTP
Entertainment
* Basic (film), ''Basic'' (film), a 2003 film
...
. It consisted of single battles leading to a final encounter with a dragon. A few years later, Tarn rewrote it in the
C programming language, and it featured minute details and kept track of populations of units in the generated world.
In high school, Tarn and Zach created a spacecraft game that simulated sections of a rocket blowing off and released their first publicly available game on
America Online
AOL (formerly a company known as AOL Inc. and originally known as America Online) is an American web portal and online service provider based in New York City, and a brand marketed by Yahoo! Inc. (2017–present), Yahoo! Inc.
The service tra ...
.
After ''Dragslay'', Tarn and Zach started working on another adventure game, focusing on
procedural world generation.
For this, they drew inspiration from the
role-playing video game
Role-playing video games, also known as CRPG (computer/console role-playing games), comprise a broad video game genre generally defined by a detailed story and character advancement (often through increasing characters' levels or other skills) ...
hit ''
Ultima
Ultima may refer to:
Places
* Ultima, Victoria, a town in Australia
* Pangaea Ultima, a supercontinent to occur in the future
* ''Ultima'', the larger lobe of the trans-Neptunian object 486958 Arrokoth, nicknamed ''Ultima Thule''
Companies and ...
''. After working on the project for four years and rendering it in
3D graphics
3D computer graphics, sometimes called CGI, 3D-CGI or three-dimensional computer graphics, are graphics that use a three-dimensional representation of geometric data (often Cartesian) that is stored in the computer for the purposes of perfor ...
, they released it under the title ''Slaves to Armok: God of Blood''. "Armok" was the name of the game's deity from the
variable "arm_ok", which was used in ''Dragslay'' to indicate how many arms were left on a particular unit. The addition of a random story generator was inspired by both of them being avid story writers.
Tarn said, "you could zoom in on your character, and it'd tell you how curly his leg hairs were, and the melting and flash points of various materials, It was insane."
The brothers posted it on their website in 2000, but by 2004 the project started to face increasing problems. Tarn announced in 2004 on his
forums
Forum or The Forum may refer to:
Common uses
*Forum (legal), designated space for public expression in the United States
*Forum (Roman), open public space within a Roman city
**Roman Forum, most famous example
* Internet forum, discussion board ...
that he was going to shift his main project from ''Armok'' to a side project called ''Dwarf Fortress''.

Tarn earned a degree in
mathematics
Mathematics is a field of study that discovers and organizes methods, Mathematical theory, theories and theorems that are developed and Mathematical proof, proved for the needs of empirical sciences and mathematics itself. There are many ar ...
at the
University of Washington
The University of Washington (UW and informally U-Dub or U Dub) is a public research university in Seattle, Washington, United States. Founded in 1861, the University of Washington is one of the oldest universities on the West Coast of the Uni ...
.
He began his
doctoral studies
A Doctor of Philosophy (PhD, DPhil; or ) is a terminal degree that usually denotes the highest level of academic achievement in a given discipline and is awarded following a course of graduate study and original research. The name of the deg ...
at
Stanford University
Leland Stanford Junior University, commonly referred to as Stanford University, is a Private university, private research university in Stanford, California, United States. It was founded in 1885 by railroad magnate Leland Stanford (the eighth ...
, completing them in 2005 with a dissertation titled "Flat Chains in
Banach Space
In mathematics, more specifically in functional analysis, a Banach space (, ) is a complete normed vector space. Thus, a Banach space is a vector space with a metric that allows the computation of vector length and distance between vectors and ...
s", which was published in ''The Journal of Geometric Analysis''. During his first year at Stanford, he said he was under heavy pressure, that the professional environment and competitiveness affected him negatively. He also cited a dilemma he was facing between studying mathematics and developing video games. This stressful situation drove him for a time into
depression and he admitted to having had a brief stint with
narcotics
The term narcotic (, from ancient Greek ναρκῶ ''narkō'', "I make numb") originally referred medically to any psychoactive compound with numbing or paralyzing properties. In the United States, it has since become associated with opiates ...
.
Shift to game development
The Adams brothers started a company called Bay 12 Games, where they developed and released
freeware
Freeware is software, often proprietary, that is distributed at no monetary cost to the end user. There is no agreed-upon set of rights, license, or EULA that defines ''freeware'' unambiguously; every publisher defines its own rules for the free ...
games, attracting a small following. Tarn assumed the
alias "Toady One" and Zach "ThreeToe". Tarn's background in mathematics helped in the development of
algorithms
In mathematics and computer science, an algorithm () is a finite sequence of mathematically rigorous instructions, typically used to solve a class of specific problems or to perform a computation. Algorithms are used as specifications for per ...
with
three dimensional spatial considerations. With his skill in programming and Zach's background in ancient history and storytelling, together the brothers designed and developed various projects.
They worked on other small projects during graduation which were released on their website. Tarn put up a
PayPal
PayPal Holdings, Inc. is an American multinational financial technology company operating an online payments system in the majority of countries that support E-commerce payment system, online money transfers; it serves as an electronic alter ...
button after a request from a fan; similarly, a subscriber system was added later. In the next five months, they made around $300, which brought in only enough to cover their site's $20 hosting cost.
They made side projects like ''Corin'' and ''Kobold Quest'' in a few days and ''Squiggles'' was made in three hours. Other titles were ''Liberal Crime Squad'' and ''WWI Medic''.
In 2006, Tarn started his post doctorate in
Texas A&M
Texas A&M University (Texas A&M, A&M, TA&M, or TAMU) is a public university, public, Land-grant university, land-grant, research university in College Station, Texas, United States. It was founded in 1876 and became the flagship institution of ...
, which was his goal since his undergraduate days. He decided to leave during the first year due to increasing stress
and is said to have broken down in the department head's office.
After being offered to stay another year and a $50,000
stipend
A stipend is a regular fixed sum of money paid for services or to defray expenses, such as for scholarship, internship, or apprenticeship. It is often distinct from an income or a salary because it does not necessarily represent payment for work pe ...
, he agreed and eventually left to devote his full attention to developing ''Dwarf Fortress'' and other games, which was until then only a hobby. He said, "At the end of a math problem, you have a paper and maybe you publish it, and the paper can be a building block for the edifice of mathematics, but to me that's not so important. But working on a problem and having a game when you're done? That's pretty damn cool."
''Dwarf Fortress''
After quitting university, Tarn thought he would use up his savings after a year ($15,000) so he looked for a job to sustain himself. ''Dwarf Fortress'' was originally started in October 2002 as a two-month side project, but was suspended soon after due to the brothers' focus shifting to ''Armok''. In the meantime he had also developed a game called ''Mutant Miner''. It was a
turn-based
Timekeeping is relevant to many types of games, including video games, tabletop role-playing games, board games, and sports. The passage of time must be handled in a way that players find fair and easy to understand. In many games, this is don ...
game where players look for minerals and dig out tunnels while dealing with threats. He realized the need to be able to manage many miners and not only have a high score list, but also store more minute details, which was the beginning of the project.
The game's primary mode is set in a
procedurally generated
In computing, procedural generation is a method of creating data algorithmically as opposed to manually, typically through a combination of human-generated content and algorithms coupled with computer-generated randomness and processing power. I ...
fantasy world in which the player indirectly controls a group of
dwarves and attempts to construct a successful and wealthy underground fortress.
Its development kept on until 8 August 2006, when the first
alpha version
The software release life cycle is the process of developing, testing, and distributing a software product (e.g., an operating system). It typically consists of several stages, such as pre-alpha, alpha, beta, and release candidate, before the fi ...
was released. Donations reached $800–$1000 in the following months, this average increased gradually until Tarn and Zach were financially stable.
They then decided to solely rely on donations. The game eventually attracted a
cult following
A cult following is a group of fans who are highly dedicated to a person, idea, object, movement, or work, often an artist, in particular a performing artist, or an artwork in some medium. The latter is often called a cult classic. A film, boo ...
and various web communities devoted to it were formed.
Videogame journalists later covered the game. They focused on it being a two-member project surviving through donations. Critics praised its complex,
emergent gameplay
Emergent gameplay refers to complex situations in video games, board games, or role-playing games that emerge from the interaction of relatively simple game mechanics.
Designers have attempted to encourage emergent play by providing tools to play ...
but had mixed reactions regarding its difficulty.
The game uses
CP437 text-based graphics and is open-ended with no main objectives. It is a part
construction and management simulation
Construction and management simulation (CMS), sometimes also called management sim or building sim, is a subgenre of simulation game in which players build, expand or manage fictional communities or projects with limited resources. Strategy vide ...
and part
roguelike
Roguelike (or rogue-like) is a style of role-playing game traditionally characterized by a dungeon crawl through procedurally generated levels, turn-based gameplay, grid-based movement, and permanent death of the player character. Most ro ...
game due to its multiple game modes. Before playing, the player has to generate worlds with continents, oceans and histories documenting civilizations. The main game mode, Dwarf Fortress mode, consists of selecting a suitable site from the generated-world, establishing a successful colony or fortress, while fighting threats like
goblin
A goblin is a small, grotesque, monster, monstrous humanoid creature that appears in the folklore of multiple European cultures. First attested in stories from the Middle Ages, they are ascribed conflicting abilities, temperaments, and appearan ...
invasions, accumulating wealth, and taking care of the dwarves. Each dwarf is modeled down to its individual personality, has likes or dislikes, and specific trainable skills in various labors.
The second game mode, Adventurer mode, is a turn-based, open-ended roguelike, where the player starts off as either an adventurer in the world, or the leader of an adventuring group, and is free to roam the land, complete quests, or explore old abandoned fortresses.
The combat system is anatomically detailed with combat logs describing organs getting pierced, fat getting bruised, and limbs getting severed.
Continuing its development, Tarn calls it his life's work and said in 2011 that version 1.0 will not be ready for at least another 20 years, and even after that he would continue to work on it. The game influenced ''
Minecraft
''Minecraft'' is a 2011 sandbox game developed and published by the Swedish video game developer Mojang Studios. Originally created by Markus Persson, Markus "Notch" Persson using the Java (programming language), Java programming language, the ...
'',
Terraria
''Terraria'' ( ) is a 2011 action-adventure sandbox game developed by Re-Logic and published by 505 Games. The game features exploration, combat, crafting, building, and mining inside a procedurally generated 2D computer graphics, 2D world. ...
, and various other games. It was selected among other games to be featured in the
Museum of Modern Art
The Museum of Modern Art (MoMA) is an art museum located in Midtown Manhattan, New York City, on 53rd Street (Manhattan), 53rd Street between Fifth Avenue, Fifth and Sixth Avenues. MoMA's collection spans the late 19th century to the present, a ...
to show the
history of video gaming in 2012.
There is an active community of fans of the game, and Tarn said they have helped them in the development of the game in addition to providing monetary support.
Fans have also made creative interpretations of the game. In the past, he and his brother sent crayon drawings or short stories to the donors, customized to their requests, and displayed the donors who have donated the most on their website.
Adams moved to the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
in 2024.
Inspirations and preferences
Tarn has cited books, movies,
pen and paper role-playing games and other computer games, experienced during his childhood, as an inspiration for the various games he developed.
He said the works of
J.R.R. Tolkien
John Ronald Reuel Tolkien (, 3 January 1892 – 2 September 1973) was an English writer and philologist. He was the author of the high fantasy works ''The Hobbit'' and ''The Lord of the Rings''.
From 1925 to 1945, Tolkien was the Rawlinson ...
and tabletop games like ''
Dungeons & Dragons
''Dungeons & Dragons'' (commonly abbreviated as ''D&D'' or ''DnD'') is a fantasy tabletop role-playing game (TTRPG) originally created and designed by Gary Gygax and Dave Arneson. The game was first published in 1974 by TSR (company)#Tactical ...
'' and ''
Cyberpunk 2020
''Cyberpunk'' is a tabletop role-playing game in the dystopian science fiction genre, written by Mike Pondsmith and first published by R. Talsorian Games in 1988. It is typically referred to by its second or fourth edition names, ''Cyberpunk 2 ...
'' interested him,
with
fantasy
Fantasy is a genre of speculative fiction that involves supernatural or Magic (supernatural), magical elements, often including Fictional universe, imaginary places and Legendary creature, creatures.
The genre's roots lie in oral traditions, ...
and
sci-fi
Science fiction (often shortened to sci-fi or abbreviated SF) is a genre of speculative fiction that deals with imaginative and futuristic concepts. These concepts may include information technology and robotics, biological manipulations, space ...
being heavily influential. On ''Dwarf Fortress wound-based system rather than regular
hitpoints, he said, "Hit points are depressing to me. It's sort of a reflex to just have HP/MP, like a game designer stopped doing their job...You should really question all of the mechanics in the game from the bottom up."
He has said he does not use
version control
Version control (also known as revision control, source control, and source code management) is the software engineering practice of controlling, organizing, and tracking different versions in history of computer files; primarily source code t ...
for his works; however, this changed on Dwarf Fortress with the addition of another programmer.
Regarding his career, he said, "...but as far as design is concerned, I just think that I've happened to fall into a little sweet spot where I get a lot of freedom, but I guess the cost is my livelihood."
He further said working in the gaming industry can be "soul crushing" for many people.
Adams has expressed his dislike for
massively multiplayer online games
A massively multiplayer online game (MMOG or more commonly MMO) is an online video game with a large number of players to interact in the same online game world. MMOs usually feature a huge, persistent world, persistent open world, although t ...
and said that popular games are addictive because they make use of the player's
compulsive hoarding
Hoarding disorder (HD) or Plyushkin's disorder is a mental disorder characterised by persistent difficulty in parting with possessions and engaging in excessive acquisition of items that are not needed or for which no space is available. This re ...
trait.
Bibliography
*
*
*
References
External links
Official Bay 12 games website"Kitsap creators of Dwarf Fortress make losing fun" from ''Kitsap Sun'' on Apr 6, 2013
*
{{DEFAULTSORT:Adams, Tarn
1978 births
American video game designers
Living people
American expatriates in England
American video game programmers
Indie game developers
People from Silverdale, Washington
Stanford University School of Humanities and Sciences alumni
University of Washington College of Arts and Sciences alumni
Mathematicians from Washington (state)
American applied mathematicians