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Sandy Petersen

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Sandy Petersen
Petersen at Lucca Comics & Games 2011
Born
Carl Sanford Joslyn Petersen

(1955-09-16) September 16, 1955 (age 71)
St. Louis, Missouri
OccupationGame designer
Years active1980 - present
Notable workCall of Cthulhu (1981)
Doom (1993)
Doom II (1994)
Quake (1996)

Carl Sanford Joslyn "Sandy" Petersen (born September 16, 1955) is an American game designer. He worked at Chaosium, contributing to the development of RuneQuest and creating the horror role-playing game Call of Cthulhu. He later joined id Software where he worked on the development of the Doom franchise and Quake. As part of Ensemble Studios, Petersen contributed to the Age of Empires franchise.

Biography

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Petersen was born in St. Louis, Missouri and developed a love for dinosaurs at age 3. He studied zoology at Brigham Young University and later attended the University of California, Berkeley, majoring in entomology.[1]

Petersen started role-playing when TSR first released Dungeons & Dragons, playing the first edition with friends in 1974. In 1978, when RuneQuest was published by Chaosium, Sandy switched to RuneQuest as his primary game, instead.[2]

Career

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Over a career spanning more than four decades, he has served as author, designer, developer, or producer on more than 100 published games, with combined sales exceeding 36 million copies.[3] He invented a substantial portion of the established canon within the modern Cthulhu Mythos.[4]

He has received more than 70 industry awards, including induction into the Origins Game Designer Hall of Fame, and was voted “Favorite Designer” in the 1994 Gamer’s Choice Awards—an honor given annually to a single recipient selected by fan vote.[5]

Work

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Chaosium

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After a friend encouraged Petersen to write to Greg Stafford with ideas for new RuneQuest material, the two quickly became friends. In 1980, Sandy’s first publication, the Gateway Bestiary, was released. This RuneQuest bestiary featured a section on giant insects—reflecting his graduate studies in entomology—as well as a section on Lovecraftian monsters, marking the first appearance of Lovecraft creatures in any role-playing game.[6]

Between 1979 and 1981, Petersen wrote or contributed to numerous Chaosium publications, including substantial collaboration with Greg Stafford on the Trollpak for RuneQuest.[7]

Petersen became a full-time staff member at Chaosium in 1982.[8][9] His interest for role-playing games and H. P. Lovecraft were fused when he became principal author of Chaosium's game Call of Cthulhu, published 1981,[10] and many scenarios and background pieces thereafter.[11]

He authored several RuneQuest supplements for Avalon Hill and Games Workshop.[11] Petersen served as co-designer for West End Games's Ghostbusters role-playing game. When developing the Ghostbusters game, Sandy created the “dice pool” mechanic, still widely used in tabletop role-playing games.[11]

Between 1981 and 1988 Petersen worked on more than 50 publications by Chaosium: he was involved to some extent in almost every game release by Chaosium during those years. His main areas of focus however, were Call of Cthulhu and RuneQuest.[7]

MicroProse

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Petersen worked some time for video game company MicroProse, where he worked on Sid Meier's Pirates!, Civilization, and Sword of the Samurai.[11] Between 1989 and 1993 he worked on more MicroProse video games including Darklands, Hyperspeed, and Lightspeed. Petersen was laid off in 1993 and was jobless for five months. He considered that period as one of the worst times of his life.[12]

Sandy was on the team which developed Sid Meier’s Civilization. One of his contributions was to make unemployed people appear as “Elvis”, and that you can change them to be “Einsteins” instead. He has stated in multiple interviews that Lightspeed (and its sequel Hyperspeed) is the only game in his entire career as an employee, when he was allowed to freely choose the game’s theme and create its universe from whole cloth.[13]

Id Software

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Petersen was hired by id Software in August 1993. During his interview, John Romero introduced him to DoomEd and simply asked him to build a level. Romero was ultimately happy with the results, so Petersen was brought on to production for Doom. The level from Petersen's interview eventually became "E2M6".[14] He was a fast level designer and produced all maps for the third episode of Doom, Inferno. Petersen designed 20 of the 27 levels in Doom and 17 levels of the 32 for Doom II. An 18th, "Dead Simple", was redesigned by American McGee before release.[15]

In interviews Sandy frequently repeats that the design of Doom and Doom II were group efforts, and even the artists and programmers contributed. For example, he credits John Carmack with suggesting to him the idea of using the rocket launcher on yourself to find the secret exit in map E3M6.[16]

Petersen considered his main job at id was to make the game fun. Beyond designing the majority of levels for the first two Doom games, he determined the names for demons, items, degrees of difficulty and levels and determined map order. He wrote the text of the Doom manuals although the original story idea for Doom is credited to Tom Hall. He also wrote the text that appears between levels and at the end of game, as well as the text which appears when you pick up items or exit the game. He also suggested to the team to modify the BFG 9000’s such that it became a smart bomb instead of an upgraded plasma gun which is what it was prior to release.[17]

Petersen was then involved with The Ultimate Doom in 1995 as well as the R&D phase for Quake. At the time, Quake was based on an id staff D&D campaign. Petersen was enthusiastic about the project, though he had not been a player in the original campaign as it was before his arrival at the company.[18] With id Software's designers waiting for the Quake engine to be ready for its design team, the studio sent Petersen to work temporarily at Rogue Entertainment, which was licensing the Doom engine to develop Strife.[19] Romero also credits Petersen with coming up with the title for the Hexen expansion Deathkings of the Dark Citadel. When Quake was reformulated as a first-person shooter in late 1995, id removed Petersen from the Strife team to focus on the game. The revised Quake storyline is credited to Petersen, along with seven levels.[20]

Beyond writing the storyline, Petersen played a major role in incorporating Lovecraftian and Cthulhu Mythos elements into Quake, including naming the final boss Shub-Niggurath and creating the Shamblers and Spawn, whose designs were inspired by creatures depicted in S. Petersen’s Field Guide to Cthulhu Monsters.[21]

Late in Quake’s development, tensions arose among several key members of the id Software team, ultimately leading to the departure of John Romero. Petersen considered Romero the colleague he was closest to at id, and his exit had a profound impact on him. By June of the following year, Petersen chose to resign as well. Before leaving, he successfully advocated for the hiring of his friend Jennell Jaquays (then Paul) as his replacement.[13]

Ensemble Studios

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Petersen left id Software for Ensemble Studios in June 1997.[22] There, he worked as a game designer on several of their Age of Empires titles, including Rise of Rome, Age of Kings, and The Conquerors.[11] During this time, he was a frequent poster on the HeavenGames forums under the username ES_Sandyman. He ran a popular series of threads, "Ask Sandyman", where forum members could ask him about anything they wanted.[23]

Petersen served as lead designer on all three Age of Empires expansion packs—Rise of Rome, The Conquerors, and The WarChiefs.Across the core Age of Empires series (Age of Empires I, II, and III), his primary responsibilities included designing the single-player campaigns, writing the scripts for the computer-player AI, overseeing unit and civilization balance, and creating the unique units for each civilization.[24]

Other works

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Petersen frequently appears as guest of honor for industry conventions in the US, Europe, Australia, and Japan. He has never charged a fee to be a guest of honor or to contribute to seminars, speaking engagements or to run games and events.[13]

Petersen was the executive producer for the 2011 film The Whisperer in Darkness. It was produced by H.P. Lovecraft Historical Society Motion Pictures in the style of a 1930s black and white horror film.

In April 2011,[25] he served as the publisher of horror magazine Arcane: Penny Dreadfuls for the 21st Century.[26]

Petersen took a professorship at The Guildhall at SMU in 2009 following the closure of Ensemble Studios, where he taught several courses on game design.[27]

Petersen co-designed the design curriculum at The Guildhall with Jennell Jaquays. He also taught the central game design principles course that all Guildhall students must take (whether they be designers, artists, coders, or producers).[27]

After only 2 years Sandy became disillusioned with the nature of the bureaucracy in higher education and left SMU.[28]

Petersen worked at Barking Lizards Technologies as their creative director, after leaving The Guildhall, and worked on their iOS release Osiris Legends.[28]

In mid-2013, Petersen led a successful Kickstarter campaign by his company, Green Eye Games, to produce the boardgame Cthulhu Wars. Over US$1,400,000 was raised achieving over 3,500% of the initial target. This success allowed the creation of more figures (60), map expansions and additional scenario options.[29] Green Eye Games also produced the unsuccessful Kickstarter campaign for Cthulhu World Combat (iOS, Android, Windows, PSN, Xbox Live).[30][31][32]

In June 2015, it was announced that Petersen and Greg Stafford returned to Chaosium Inc.[33] Petersen retired from the board in 2019, and now runs his own game company.[34]

Petersen runs a website, Petersen Games,[35] where he had sold various tabletop games, often based on his work with Call of Cthulhu. As part of his ongoing work with Call of Cthulhu content he has published sourcebooks for Dungeons and Dragons 5e, Pathfinder, and Pathfinder 2e. Those books adapt the Cthulhu mythos for those systems to allow for several mythos-based player character options, many monsters, new insanity rules, and much more. He can also be regularly seen on his YouTube channel, "Sandy of Cthulhu," where he speaks on subjects such as boardgames, roleplay adventures, his own personal works, his time with Id Software, tips on gameplay, advice on game design, authors, Lovecraftian horror, movies, and his love of fiction in general.

In 2024 he partnered with Quimbly's Toys and Games. to continue publishing his games. As of March, 2025, this partnership has ended and his company, Petersen Games once again publishes and sells games directly.[36]

Post-2015, Petersen focused heavily on board game design, particularly titles inspired by the Cthulhu Mythos. Significant releases include Cthulhu Wars (2015)[37], Theomachy (2016)[38], Orcs Must Die! (2016),  Dicenstein (2017), Evil High Priest (2018)[39], The Gods War (2018)[40], Hyperspace (2019), and Planet Apocalypse (2020). Petersen Games, his company, continues producing expansions and new titles, often with family involvement.[41]

Petersen’s earlier work on Doom (1993–1994) remains a point of public discussion, with a 2025 report highlighting an ongoing social media dispute with John Romero regarding credit for the original story.[42] He also contributed to Age of Empires II: The Conquerors (1999), particularly in level design and historical content. In recent reflections, Petersen shared that Microsoft’s forced addition of Koreans to the game led to historical inaccuracies and controversy in South Korea.[43]

Petersen emphasizes investigative gameplay over combat in games inspired by Lovecraft’s mythos, a principle that shaped Call of Cthulhu and continues to influence his board games. He remains active in public events, including the Celsius 232 festival in Avilés (2025)[44], where he demonstrated gameplay, shared design insights, and played alongside fans.[13]

Credits

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Video games

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YearTitleDeveloperNotes
1989Sword of the SamuraiMicroProse
Sid Meier's Pirates!Atari ST version
1990Lightspeed
Command HQ
1991Civilization (1991)
Hyperspeed
1992Darklands
1993Doomid Software
1994DragonsphereMicroProse
Wolfenstein 3Did SoftwareAtari Jaguar version
Doom II: Hell on Earth
1995The Ultimate Doom
1996Quake
Hexen: Beyond HereticRaven SoftwareSega Saturn and PlayStation versions
Final DoomTeamTNT
1997Quake IIid SoftwareUncredited
Doom 64Midway Studios San Diego
Age of EmpiresEnsemble Studios
1998Age of Empires: The Rise of Rome
1999Age of Empires II
2000Age of Empires II: The Conquerors
2002Age of Mythology
2003Age of Mythology: The Titans
2005Age of Empires III
2006Age of Empires III: The WarChiefs
2009Halo Wars
2011Osiris LegendsBarking Lizard Studios
2018Call of CthulhuCyanide
2025WartornStray Kite Studios

Role-playing games

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Additional content for other role-playing games

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Dungeons and Dragons 5th edition
Sandy Petersen's Cthulhu Mythos for 5e (2019, ISBN 978-0-9995390-4-0)
Pathfinder
Sandy Petersen's Cthulhu Mythos for Pathfinder - 1st Edition (2016, ISBN 978-0-9995390-0-2)
Pathfinder 2nd Edition
Sandy Petersen's Cthulhu Mythos for Pathfinder 2nd Edition (2021, ISBN 9781950982288)

Board games

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  • Cthulhu Wars (2015)
  • Theomachy (2016)
  • Orcs Must Die! (2016)
  • Dicenstein (2017)
  • Evil High Priest (2018)
  • The Gods War (2018)
  • Hyperspace (2019)
  • Planet Apocalypse (2020)

Films

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Other projects

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Chaosium

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Games
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Awards

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Since 2015, Petersen has continued to receive recognition for his contributions to role-playing games. Notably, Horror on the Orient Express won the ENnie Awards for Best Adventure (Gold) and Best Production Values (Silver) and was nominated for Product of the Year in 2015.[54] The same year, The Guide to Glorantha received a Silver ENnie for Best Cartography, was nominated for Product of the Year, and won the Diana Jones Award for Excellence in Gaming.[55] In 2024, Call of Cthulhu was inducted into the ENnie Awards Hall of Fame, cementing its status as a foundational RPG.[5]

Criticism

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In August of 2026, Petersen fell under heavy criticism after he was hired to be the spokesperson for a blockchain based game called "DOOMSol" and advertised it on his social media accounts. Many were quick to identify DOOMSol as a scam and copyright infringement. As of October 2026, the website for DOOMSol has been taken down[63][64][65].

References

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  1. ↑ Petersen, Sandy (10 December 2021). "Yithian Evolution". YouTube. Retrieved 23 March 2022.
  2. ↑ Perry, David (2024-08-06). "Review | Dungeons & Dragons is 50. These books show how it really got started". The Washington Post. ISSN 0190-8286. Retrieved 2026-07-28.
  3. ↑ Maruccia, Alfonso (2026-06-25). "Game designer Sandy Petersen recalls how Quake's development "broke" id Software". TechSpot. Retrieved 2026-07-28.
  4. ↑ Kelly, James Floyd (2016-10-28). "'Cthulhu: A Deck Building Game' Delivers the Dread (But Fun Dread)". GeekDad. Retrieved 2026-07-28.
  5. 1 2 3 "Hall of Fame". The Academy of Adventure Gaming Arts & Design. Retrieved 2026-07-28.
  6. ↑ "Sandy's first published work for Chaosium: The Gateway Bestiary (features HPL creations a year before publication of Call of Cthulhu)". BRP Central - The Chaosium forums. 2019-07-12. Retrieved 2026-07-28.
  7. 1 2 "GREG STAFFORD & SANDY PETERSEN REJOIN CHAOSIUM INC". Chaosium Inc. Retrieved 2026-07-28.
  8. ↑ Appelcline (2011), p.86.
  9. ↑ "Meet the Team".
  10. ↑ Petersen, Sandy (September 1993). "Eye of the Monitor". Dragon (197): 57–62.
  11. 1 2 3 4 5 Petersen (2007), p.144.
  12. ↑ Petersen, Sandy (20 April 2020). "Tales from the Dark Days of Id Software". YouTube. Retrieved 15 March 2022.
  13. 1 2 3 4 5 Watson, Eric (2020-01-28). "From Doom to Cthulhu Wars: Sandy Petersen on 35 years of tabletop design, Lovecraft and leaving video games behind". Dicebreaker. Retrieved 2026-07-28.
  14. ↑ Romero (2023), pp.146-174.
  15. ↑ Romero (2023), pp.185-197.
  16. ↑ ""Does John Romero Still Enjoy Shooting People?"". Next Generation. June 1997. p. 30.
  17. ↑ Joker Verlag, Grasbrunn (1994-03-19). PC Joker April 1994.
  18. ↑ Romero (2023), pp.213-235.
  19. ↑ Romero (2023), pp.236-247.
  20. ↑ Romero (2023), pp.248-274.
  21. ↑ "What Are the 'Lovecraft Country' Monsters and Where Do They Come From?". Newsweek. 2020-08-17. Retrieved 2026-07-28.
  22. ↑ Feldman, Curt (July 9, 1997). "Ensemble's Second Title Picks Up Speed". GameSpot. CBS Interactive. Archived from the original on December 3, 1998. Retrieved November 28, 2016.
  23. ↑ "Ask Sandyman – Age of Kings Heaven".
  24. ↑ "Age 4 and 5?!? - Age of Empires III Heaven Forum". aoe3.heavengames.com. Retrieved 2026-07-28.
  25. ↑ Shumate, Nathan, ed. (April 2011). Arcane: Penny Dreadfuls for the 21st Century. Cold Fusion Media Empire. ISBN 978-1461059608.{{cite book}}: CS1 maint: deprecated archival service (link)
  26. ↑ "Arcane: Penny Dreadfuls for the 21st Century". Cold Fusion Media. Archived from the original on April 7, 2011. Retrieved January 9, 2026.
  27. 1 2 "The Guildhall at SMU Faculty". Southern Methodist University.
  28. 1 2 "Guildmasters & Keynote Speakers". Southern Methodist University. Retrieved January 9, 2026.{{cite web}}: CS1 maint: deprecated archival service (link)
  29. ↑ "Cthulhu Wars". 15 April 2024.
  30. ↑ "Barking Lizards Management Team". Barking Lizards.
  31. ↑ "Cthulhu World Combat by Sandy Petersen — Kickstarter". 24 October 2012.
  32. ↑ "Cthulhu World Combat". Archived from the original on November 21, 2012.
  33. ↑ Stafford, Greg (2015-06-02). "GREG STAFFORD & SANDY PETERSEN REJOIN CHAOSIUM INC". Retrieved 2015-06-03.
  34. ↑ Chaosium. "The Chaosium Team". Retrieved 2023-10-24.
  35. ↑ "Petersen Games". Retrieved January 9, 2026.{{cite web}}: CS1 maint: deprecated archival service (link)
  36. ↑ "Petersen Games and Quimbley Relationship Ending | Cthulhu Wars". BoardGameGeek. Retrieved 2026-07-28.
  37. ↑ Carter, Chase (2020-12-11). "Cthulhu Wars: Duel distils Miskatonic mayhem into a travel-ready, two-player clash". Dicebreaker. Retrieved 2026-07-28.
  38. ↑ "Theomachy Review - with Tom Vasel|The Dice Tower". dicetower.com. Retrieved 2026-07-28.
  39. ↑ Williams, Tyler (2020-04-01). "Evil High Priest Game Review – Meeple Mountain". Retrieved 2026-07-28.
  40. ↑ "Crazy Eights: Sandy Petersen on Glorantha: The Gods War". GAMINGTREND. 2016-08-24. Retrieved 2026-07-28.
  41. ↑ Olsen, Anton (2018-02-01). "Kickstarter Tabletop Alert: 'Planet Apocalypse'". GeekDad. Retrieved 2026-07-28.
  42. ↑ "After 20 years, Doom co-creator John Romero looks back on the impact of a seminal (and Satanic) game (interview)". VentureBeat. 2013-12-11. Archived from the original on 2022-05-25. Retrieved 2026-07-28.
  43. ↑ "Microsoft forced to add Koreans to Age of Empires 2 — and it cost their employee his freedom". 2025-03-19. Retrieved 2026-07-28.
  44. ↑ "Sandy Petersen Discusses the Canceled Halo Titan and its Surprising Ending - Exclusive Interview". Netto's Game Room. 2025-12-15. Retrieved 2026-07-28.
  45. ↑ "Call of Cthulhu - RPGnet RPG Game Index". index.rpg.net. Retrieved 2026-07-28.
  46. ↑ "Nerdist Podcast: George R.R. Martin". Nerdist. Archived from the original on 2013-08-01. Retrieved 2026-07-28.
  47. ↑ "Review of Ringworld - RPGnet RPG Game Index". www.rpg.net. Retrieved 2026-07-28.
  48. ↑ "ElfQuest Reading Room". ElfQuest. Retrieved 2026-07-28.
  49. ↑ "Petersen's Campaign Log (1984)". The Well of Daliath. 2021-12-11. Retrieved 2026-07-28.
  50. ↑ "Chaosium's Hawkmoon". Stormbringer!. 2026-03-05. Retrieved 2026-07-28.
  51. ↑ Mark (2026-04-15). "Throwback Review: Ghostbusters RPG (1986)". Dice Monkey. Retrieved 2026-07-28.
  52. ↑ "Favourite Edition of Strombringer". BRP Central - The Chaosium forums. 2020-04-06. Retrieved 2026-07-28.
  53. ↑ "Review of Arkham Horror 1st edition - RPGnet RPG Game Index". www.rpg.net. Retrieved 2026-07-28.
  54. ↑ "2015 ENnie Award Winners". ENnie Awards. 2015-08-12. Archived from the original on 2019-08-20. Retrieved 2026-07-28.
  55. ↑ "CHA4025 Guide to Glorantha (2014)". The Well of Daliath. 2018-12-29. Retrieved 2026-07-28.
  56. ↑ "Chaosium Awards". www.chaosium.com. Retrieved 2026-07-28.
  57. ↑ Patterson, Tammy. "List of Winners - Academy of Adventure Gaming Arts and Design". www.originsgamefair.com. Archived from the original on 2008-04-15. Retrieved 2026-07-28.
  58. 1 2 "Hall of Fame". The Academy of Adventure Gaming Arts & Design. Retrieved 2026-07-28.
  59. ↑ ever, Andy Kelly The making of one of the most iconic PC games (2020-08-11). "The story of Doom and how it changed everything—as told by co-creator John Romero". PC Gamer. Retrieved 2026-07-28.
  60. ↑ "There are a few things that I look back on as my mistakes in the early days | Hacker News". news.ycombinator.com. Archived from the original on 2026-07-15. Retrieved 2026-07-28.
  61. ↑ "Sandy Petersen". H.P. Lovecraft Film Festival & CthulhuCon. 2016-01-14. Retrieved 2026-07-28.
  62. ↑ "Chaosium Awards". www.chaosium.com. Retrieved 2026-07-28.
  63. ↑ https://web.archive.org/web/20260805161953/https://www.doomsol.com/home.html/
  64. ↑ https://www.polygon.com/doom-memecoin-sandy-petersen-bethesda-legal-action/
  65. ↑ https://www.headliner.nl/artikelen/bethesda-stuurt-juridische-waarschuwing-crypto-onderneming-sandy-petersen-doom-157673

Works cited

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