| Title | Code | Date | Publisher | System (Setting) |
|---|
 Baba Dochia | | Aug 2022 | Chaosium | Call of Cthulhu (Now) |
 Baby Cthulhu Promo Card | P1 | 2005 | New Media Publishing | MiniMonFa |
| Back to Nature | | Oct 2022 | Chaosium | Call of Cthulhu (Strange Aeons) [1974] |
| Bad Blood * | | Dec 2020 | Fantasy Flight Games | Arkham Horror: The Card Game |
| Bad Day at Hanging Rock | | Nov 2021 | Chaosium | Call of Cthulhu (Classic) |
| The Bad Karmas and the Curse of Cthulhu | | 2025 | Xplored | The Bad Karmas |
| The Bad Place | | 2003 | Self Published | Call of Cthulhu (Now) |
| Bad Tidings | | Apr 2023 | Chaosium | Call of Cthulhu (Classic) |
 Bag of Cthulhu | CT25 | | Fantasy Flight Games | None |
| A Baker's Dozen of Sorcerous Items | AGETT0001 | 2021 | Azukail Games | Eldritch Tales |
| A Balance of Blood | | Aug 2019 | Chaosium | Call of Cthulhu (Invictus) |
| The Ballad of Bass Rock | CB6301 | 2012 | Cubicle 7 | Call of Cthulhu (Now) |
| The Ballad of Lost Danava | | Aug 2025 | Chaosium | Call of Cthulhu (Strange Aeons) [Far Future] |
| The Ballad of Thirteen Deaths | | Nov 2020 | Chaosium | Call of Cthulhu (Classic) |
 Balrog Banter | 4 | 1986 | Self Published | Call of Cthulhu (Classic) |
| A Banker's Folly | | Oct 2023 | Chaosium | Call of Cthulhu (Classic) |
| Barkham Horror: The Meddling of Meowlathotep * | PAHC01 | 2020 | Fantasy Flight Games | Arkham Horror: The Card Game |
| Barsoom | WDF33400 | 2013 | WildFire Games | The Void |
 Baruch's Burden | | 2009 | Self Published | Yellow Dawn |
| The Baskwood Island Hotel | | Aug 2021 | Chaosium | Call of Cthulhu (Classic) |
| Bathory's Children | | May 2019 | Chaosium | Call of Cthulhu (Now) |
| Battle Dice | CW-U14 | 2018 | Petersen Games | Cthulhu Wars |
 Bayt al Azif | 1 | Oct 2018 | Bayt al Azif Inc | Call of Cthulhu (Classic), Call of Cthulhu (Now), Call of Cthulhu (Strange Aeons) [1968], Call of Cthulhu (Dark Ages) |
| Bayt al Azif | 2 | Sep 2019 | Bayt al Azif Inc | Call of Cthulhu (Classic) |
| Bayt al Azif | 3 | Nov 2020 | Bayt al Azif Inc | Call of Cthulhu (Now), Call of Cthulhu (Strange Aeons) [1960s], Call of Cthulhu (Classic) |
| Bayt al Azif | 4 | Jan 2022 | Bayt al Azif Inc | Trail of Cthulhu, Call of Cthulhu (Classic), Call of Cthulhu (Now) |
| Bayt al Azif | 5 | May 2023 | Bayt al Azif Inc | Cthulhu Dark, Call of Cthulhu (Invictus), Call of Cthulhu (Classic), Call of Cthulhu (Strange Aeons) [Trojan War], Call of Cthulhu (Now) |
| Bayt al Azif | 6 | Feb 2026 | Bayt al Azif Inc | Call of Cthulhu (Classic), Call of Cthulhu (Strange Aeons) [1808] |
| Be Good Neighbours | | Mar 2024 | Chaosium | Call of Cthulhu (Classic) |
| Be My Valentine | | Aug 2022 | Chaosium | Call of Cthulhu (Classic) |
| Beach Blanket Bloodbath | | Apr 2022 | Chaosium | Call of Cthulhu (Now), Call of Cthulhu (Strange Aeons) [1960s], Call of Cthulhu (Classic) |
| The Beached Thing | | 2022 | Gallant Knight Games | Tiny Cthulhu |
| Beast | | 2014 | Self Published | Cthulhu Dark |
| Beast of Bladenboro | | 2016 | Self Published | Lovecraftesque |
| The Beast of Gevaudan | | Sep 2022 | Chaosium | Call of Cthulhu (Strange Aeons) [1765] |
| The Beast That Crawls | | Dec 2024 | Chaosium | Call of Cthulhu (Classic) |
| The Beast-God of the Dark Wood | | Oct 2025 | Chaosium | Call of Cthulhu (Strange Aeons) [1243] |
| Beasts From Beyond | FOEG:BFBY | 2017 | Greater Than Games | Fate of the Elder Gods |
| Beasts From Beyond Ghoul | | 2017 | Greater Than Games | Fate of the Elder Gods |
| Beasts From Beyond Shan | | 2017 | Greater Than Games | Fate of the Elder Gods |
| Beasts of Bright Mountain | | 2017 | Wayward Rogues Publishing | Pathfinder |
| Before the Black Throne * | AHC35 | 2019 | Fantasy Flight Games | Arkham Horror: The Card Game |
| Before the End | | 2023 | Mind's Vision | The Legacy of Cthulhu |
| Before the Fall | CHA2377 | 1998 | Chaosium | Call of Cthulhu (Classic) |
| Before the Flood * | MUH050558 | 2016 | Modiphius Entertainment | None |
| Behind Door Number 3 Promo Card | | Aug 2010 | Steve Jackson Games | Munchkin |
 Behind Enemy Lines | | 2022 | Modiphius Entertainment | Achtung! Cthulhu |
| Belly of Rot | | 2016 | Wayward Rogues Publishing | Pathfinder |
| Belly of the Beast | REB20002-MT1 | 2011 | Reality Blurs | Savage Worlds (Realms of Cthulhu) |
| Beltaine and the Beast | | 2016 | Self Published | Call of Cthulhu (Classic) |
| Ben's Game Shop | 58125 | 2015 | Devil Pig Games | Shadows Over Normandie |
| Berlin: The Wicked City | CHA23161 | 2019 | Chaosium | Call of Cthulhu (Classic) |
| The Bermuda Triangle | CHA2372 | 1998 | Chaosium | Call of Cthulhu (Now) |
| The Best of White Dwarf III | | 1985 | Games Workshop | Call of Cthulhu (Classic) |
| The Bet | | 2001 | Self Published | Call of Cthulhu (Classic) |
| Beta Maxxthulhu | BMT.AE | 2018 | Halfling Caravan Games | Beta Maxx |
| Between Heart Beats | | Nov 2023 | Xipe Totec Press | Delta Green, Call of Cthulhu (Now), Cthulhu Dark, Trail of Cthulhu |
| Beyond Doubt | | 2027 | Lucky Duck Games | Chronicles of Crime |
| Beyond the Edge of Darkness | | Oct 2024 | Chaosium | Call of Cthulhu (Classic) |
| Beyond the Flesh | | Mar 2021 | Chaosium | Call of Cthulhu (Gaslight) |
| Beyond the Low Wall of Sleep | | Mar 2026 | Chaosium | Call of Cthulhu (Strange Aeons) [Iron Age] |
| Beyond the Mountains of Madness | CHA2380 | 1999 | Chaosium | Call of Cthulhu (Classic) |
| Beyond the Stars | | Nov 2023 | Chaosium | Call of Cthulhu (Classic) |
| Beyond the Threshold | MAD23 | 2017 | Fantasy Flight Games | Mansions of Madness |
| Beyond the Veil | | 2016 | Dan Verssen Games | The Cards of Cthulhu |
| Beyond the Veil of Dreams: Susupti | | Jul 2022 | Chaosium | Call of Cthulhu (Now) |
| Beyond the Void | LG020CC15L | 2013 | Legendary Games | Pathfinder |
| Beyond Time and Space | CW-U11 | 2019 | Petersen Games | Cthulhu Wars |
| Bibliophobia | | Dec 2021 | Chaosium | Call of Cthulhu (Classic) |
| Big A** Book of Hooks | | Jun 2025 | Chaosium | Call of Cthulhu (Gaslight), Call of Cthulhu (Regency), Call of Cthulhu (Darker Trails), Call of Cthulhu (Dark Ages), Call of Cthulhu (Now), Call of Cthulhu (Classic), Call of Cthulhu (Dreamlands), Call of Cthulhu (Strange Aeons) [Future], Call of Cthulhu (Invictus) |
| Big A** Book of Hooks - Cthulhu by Gaslight Edition | | Sep 2025 | Chaosium | Call of Cthulhu (Gaslight) |
| Big A** Book of Hooks - Dreamland Edition | | Jul 2025 | Chaosium | Call of Cthulhu (Dreamlands) |
| The Big Book of Cults | CHA0316 | 2005 | Chaosium | Call of Cthulhu (Now) |
| The Big Hoodoo | PELGT18 | 2011 | Pelgrane Press | Trail of Cthulhu |
| The Big-Game Hunt | | Mar 2020 | Chaosium | Call of Cthulhu (Gaslight) |
| Bile Weed | | 2009 | Self Published | Yellow Dawn |
| Bits and Pieces | | Nov 2022 | Chaosium | Call of Cthulhu (Classic) |
| The Bitter Jungle | cr5207 | Apr 2023 | Cthulhu Reborn | Cthulhu Eternal |
| The Bitter Jungle / Thunder God's Curse | cr6003 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal |
| Bitter Wind | | 2002 | Self Published | Call of Cthulhu (End Time) |
| Black Bag Jobs | CB71202 | 2011 | Cubicle 7 | Call of Cthulhu (Laundry) |
| Black Bag Jobs Reopened | CB70804 | Jun 2025 | Cubicle 7 | The Laundry |
| Black Book of B'Nar | SPB1 | 2017 | Embers Design Studios | Dungeons and Dragons |
| Black Book of B'Nar | SPB1 | 2017 | Embers Design Studios | Pathfinder |
| Black Book of B'Nar | SPB1 | 2017 | Embers Design Studios | WOIN |
| Black Books: Tomes of the Outer Dark | BBG17 | 2016 | Beyond Belief Games | Black Books |
| The Black Caverns | | 2019 | Micro RPG | One Page Cthulhu |
| The Black Drop | PELGT13 | 2010 | Pelgrane Press | Trail of Cthulhu |
| Black Galleys | | 2025 | BadCat Games | DreamEscape |
| Black Goat of New Orleans | GGP | 2014 | Golden Goblin Press | Call of Cthulhu (Classic) |
| Black Goat of the Woods | DMD003 | 2019 | CMON | Cthulhu: Death May Die |
| The Black Goat of the Woods Expansion | VA56 | 2008 | Fantasy Flight Games | Arkham Horror |
| Black Gold | | 2020 | Self Published | Call of Cthulhu (Delta Green) |
| Black Light | | 2019 | Self Published | Index Card RPG |
| The Black Mine of Teihiihan | | May 2019 | Self Published | GURPS, Call of Cthulhu (Darker Trails) |
| Black Mole | 3 | 1990 | Self Published | Call of Cthulhu (Classic) |
| Black Mole | 5 | 1991 | Self Published | Call of Cthulhu (Classic) |
| The Black Pyramid | | May 2024 | Chaosium | Call of Cthulhu (Classic) |
| The Black Seal | 1 | Nov 2001 | Brichester University Press | Call of Cthulhu (Classic) |
| The Black Seal | 2 | Mar 2003 | Brichester University Press | Call of Cthulhu (Classic) |
| The Black Seal | 3 | Nov 2003 | Brichester University Press | Call of Cthulhu (Classic) |
| The Black Seal | 4 | Aut 2023 | Sixtystone Press | Call of Cthulhu (Now), Call of Cthulhu (Classic) |
| Black Sites | APU8140 | 2019 | Arc Dream Publishing | Delta Green |
| Black Stars Beckon | PZO90114 | 2016 | Paizo Publishing | Pathfinder |
| Black Stars Rise | | 2013 | Self Published | Apocalypse World |
| Black Stars Rise * | AHC16 | 2018 | Fantasy Flight Games | Arkham Horror: The Card Game |
| Black Static Transmission | | 2004 | Self Published | Call of Cthulhu (Now) |
| The Black Stone | | 1999 | Self Published | Call of Cthulhu (Classic) |
| The Black String | | Mar 2026 | Chaosium | Call of Cthulhu (Now) |
| The Black Sun | 1.7 | Spr 1985 | Games Workshop | Call of Cthulhu (Classic), None |
| The Black Sun * | 2.2 | 1987 | Games Workshop | Call of Cthulhu (Classic), None |
| The Black Tide | | Feb 2025 | Chaosium | Call of Cthulhu (Strange Aeons) [1690] |
| The Black Tree of Cold Springs | | May 2021 | Chaosium | Call of Cthulhu (Classic) |
| Blackthorn Bridge Club | | Dec 2024 | Chaosium | Call of Cthulhu (Classic) |
| Blackthorn Bridge Club: Hunters Bridge | | Nov 2025 | Chaosium | Call of Cthulhu (Classic) |
| Blank | | Mar 2022 | Chaosium | Call of Cthulhu (Classic) |
| A Blank Canvas | | Apr 2023 | Chaosium | Call of Cthulhu (Gaslight) |
| The Blasphemous Tome | 1 | Mar 2016 | Self Published | Call of Cthulhu (Classic) |
| The Blasphemous Tome | 2 | Feb 2017 | Self Published | Call of Cthulhu (Now) |
| The Blasphemous Tome | 3 | Dec 2017 | Self Published | Call of Cthulhu (Classic), None |
| The Blasphemous Tome | 4 | Dec 2018 | Self Published | Call of Cthulhu (Now), Call of Cthulhu (Classic) |
| The Blasphemous Tome | 4.5 | Jun 2019 | Self Published | None, Call of Cthulhu (Now) |
| The Blasphemous Tome | 5 | Dec 2019 | Self Published | Call of Cthulhu (Classic), Call of Cthulhu (Now) |
| The Blasphemous Tome | 5.5 | Aug 2020 | Self Published | Call of Cthulhu (Now), None, Call of Cthulhu (Classic) |
| The Blasphemous Tome | 6 | Dec 2020 | Self Published | Call of Cthulhu (WWII) |
| The Blasphemous Tome | 7 | Jun 2021 | Self Published | Call of Cthulhu (Classic), Call of Cthulhu (Now) |
| The Blasphemous Tome | 8 | Dec 2021 | Self Published | Call of Cthulhu (Darker Trails), Call of Cthulhu (Classic), Call of Cthulhu (Now) |
| The Blasphemous Tome | 10 | Nov 2022 | Self Published | Call of Cthulhu (Now) |
| The Blasphemous Tome | 9 | Jun 2022 | Self Published | Call of Cthulhu (Now), Call of Cthulhu (Classic), Call of Cthulhu (Gaslight) |
| The Blasphemous Tome | 11 | Nov 2023 | Self Published | Call of Cthulhu (Classic) |
| The Blasphemous Tome | 12 | Jul 2024 | Self Published | Call of Cthulhu (Classic) |
| The Blasphemous Tome | 13 | Mar 2025 | Chaosium | Call of Cthulhu (Strange Aeons) [Near Future] |
| The Blasphemous Tome | 14 | Feb 2026 | Chaosium | Call of Cthulhu (Classic), Call of Cthulhu (Now) |
| Bleak October | | 2017 | Alter Ego Software | Call of Cthulhu (Classic) |
| The Blessed and the Blasphemous | SOS-HORROR3 | Oct 2023 | Sons of the Singularity | Call of Cthulhu (WWII) |
| The Blessed of the Wind | MUH051200 | 2018 | Modiphius Entertainment | Call of Cthulhu (Achtung!) |
| Blight at Gold Bluff | | Apr 2023 | Chaosium | Call of Cthulhu (Darker Trails) |
| Blind Date | | Apr 2024 | Chaosium | Call of Cthulhu (Classic) |
| The Bloated Saint | | Jul 2022 | Chaosium | Call of Cthulhu (Dark Ages) |
| The Blob That Ate Everything * | AHC45 | 2019 | Fantasy Flight Games | Arkham Horror: The Card Game |
| Blood Brothers | CHA2329 | 1990 | Chaosium | Call of Cthulhu (Classic) |
| Blood Brothers 2 | CHA2340 | 1992 | Chaosium | Call of Cthulhu (Classic) |
| Blood Ceremony | | 2018 | Petersen Games | Evil High Priest |
| Blood of Baalshandor * | NAH15 | 2020 | Fantasy Flight Games | Arkham Horror: The Card Game |
| Blood on the Altar * | AHC05 | 2017 | Fantasy Flight Games | Arkham Horror: The Card Game |
| Blood on the Chocolate | | Dec 2022 | Chaosium | Call of Cthulhu (Classic) |
| Blood Will Out | | 2016 | Self Published | Lovecraftesque |
| Bloodlust Playmat | FFS74 | 2017 | Fantasy Flight Games | Arkham Horror: The Card Game |
| Bloodmoon's Guide to Historical Fashions: 1920s | | Sep 2023 | Chaosium | Call of Cthulhu (Classic) |
| Bloody Hooks | | 2006 | Big Finger Games | None |
| The Bloody Viscount's Return | | Jul 2022 | Chaosium | Call of Cthulhu (Classic) |
| The Blue Stone | | 2006 | Self Published | Call of Cthulhu (Dark Ages) |
| Blurred Vision | 1 | 1985 | Self Published | Call of Cthulhu (Classic), None |
| The Boarding House at Arkham Street | 2001b | 2010 | Three Fourteen Games | Call of Cthulhu (Classic) |
| The Bog | | 1999 | Self Published | Call of Cthulhu (Classic) |
| Boletus Griseo Plaga | | 2019 | Golden Goblin Press | Call of Cthulhu (Invictus) |
| The Bonded Pair | | Dec 2024 | Chaosium | Call of Cthulhu (Classic) |
| The Bone Dealers | | 2001 | Self Published | Call of Cthulhu (Now) |
| Bonefire | | Jan 2022 | Chaosium | Call of Cthulhu (Classic) |
| Bones of the Yopasi * | EAH02 | 2012 | Fantasy Flight Games | Arkham Horror |
| Bonus Relic Cards | | 2023 | CMON | Cthulhu: Death May Die |
| The Book Club | | Nov 2021 | Chaosium | Call of Cthulhu (Now) |
| Book Hounds Dark | | 2020 | Mundus Infinitos | Cthulhu Dark |
| Book Marks | CHA23135-Bookmarks | 2016 | Chaosium | Call of Cthulhu (Classic) |
| Book of Dark Wisdom | 3 | | Elder Sign Press | Call of Cthulhu (Classic) |
| Book of Dark Wisdom | 4 | | Elder Sign Press | Call of Cthulhu (Classic) |
| Book of Dark Wisdom | 5 | | Elder Sign Press | Call of Cthulhu (Classic) |
| Book of Dark Wisdom | 1 | Sum 2003 | Elder Sign Press | Call of Cthulhu (Classic) |
| Book of Dark Wisdom | 2 | Win 2003 | Elder Sign Press | Call of Cthulhu (Classic) |
| The Book of Dzyan * | CHA6027 | 2000 | Chaosium | Call of Cthulhu (Classic) |
| The Book of Eibon * | CHA6026 | 2006 | Chaosium | Call of Cthulhu (Classic) |
| The Book of Eve | | May 2025 | Chaosium | Call of Cthulhu (Classic) |
| The Book of Nonterraqueous | FXC-19 | 2022 | Stygian Fox | Call of Cthulhu (Now) |
| The Book of Random Tables 1920s - 1930s | | 2020 | dicegeeks | Call of Cthulhu (Classic), Trail of Cthulhu |
| The Book of Random Tables: Eldritch | | Apr 2023 | dicegeeks | Call of Cthulhu (Classic) |
| Book of Shadows * | | 2009 | Stardust Publications | Dark Aeons |
| Book of Shadows * | | 2014 | Stardust Publications | Dark Aeons |
| Book of the Dead | | 2020 | Midlam Miniatures | Book of the Dead |
| The Book of the New Jerusalem * | PELGT46 | 2021 | Pelgrane Press | Trail of Cthulhu |
| The Book of the Smoke * | PELGT20 | 2011 | Pelgrane Press | Trail of Cthulhu |
| Book Plates | CHA23135-Bookplates | 2016 | Chaosium | Call of Cthulhu (Classic) |
| Bookhounds of London | PELGT16 | 2010 | Pelgrane Press | Trail of Cthulhu |
| Bookhounds of London Limited Edition Package * | | 2011 | Pelgrane Press | Trail of Cthulhu |
| Bookmark Cthulhu! | | 2022 | Lester Smith Games | Bookmark RPG |
| Books and Bullets | | 2019 | Self Published | Books and Bullets |
| The Bookstore | | 2001 | Self Published | Call of Cthulhu (Now) |
| Boom or Bust | | Dec 2019 | Dark Trapezohedron Productions | Call of Cthulhu (Classic) |
| Bootleg Whiskey, Liquor, Champagne and Wine | | Jun 2021 | Chaosium | Call of Cthulhu (Classic) |
| Border Town | | Dec 2021 | Chaosium | Call of Cthulhu (Classic) |
| Boris | 1 | 1985 | Self Published | Call of Cthulhu (Classic) |
| The Borrowed | | Jul 2025 | Chaosium | Call of Cthulhu (WWII) |
| The Boss | | 2011 | Self Published | CthulhuTech |
| The Boss | | Dec 2019 | Dark Trapezohedron Productions | Call of Cthulhu (Classic) |
| The Bottle Episode | | Jul 2021 | Chaosium | Call of Cthulhu (Classic) |
| Bottom of the World | | Dec 2023 | Self Published | Achtung! Cthulhu |
| Bottoms Up! | cr6204 | 2020 | Cthulhu Reborn | Call of Cthulhu (Classic) |
| Bottoms Up! | cr5206 | Aug 2022 | Cthulhu Reborn | Cthulhu Eternal |
| The Boundary Beyond * | AHC21 | 2018 | Fantasy Flight Games | Arkham Horror: The Card Game |
 Bouts of Madness Deck | | Jan 2023 | Chaosium | Call of Cthulhu (Classic) |
| The Box | | Oct 2025 | Chaosium | Call of Cthulhu (Now) |
| Branches of Bone | | Aug 2022 | Chaosium | Call of Cthulhu (Dark Ages) |
| Breakout Day | | 2007 | Self Published | Breakout Day |
| Breakout! | 27 | Jun 1987 | Conflict Simulations of Australia | Call of Cthulhu (Classic) |
| Breakout! | 42 | Mar 1991 | Conflict Simulations of Australia | Call of Cthulhu (Classic) |
| Breath Of Life | | 2016 | Self Published | Lovecraftesque |
| The Breathing Jungle | CT49 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG |
| Bride of Bloody Hooks | | 2007 | Big Finger Games | Call of Cthulhu (Classic) |
| The Bride of Halloween Horror | CHA0364 | 2009 | Chaosium | Call of Cthulhu (Invictus), Call of Cthulhu (Now), Call of Cthulhu (Classic), Call of Cthulhu (Dark Ages), Call of Cthulhu (Strange Aeons) [Chronicles of Future Earth] |
| The Bride of Pendle | | Sep 2025 | Chaosium | Call of Cthulhu (Classic) |
| The Bride of the Goat | | Nov 2023 | Chaosium | Call of Cthulhu (Classic) |
| Bride of the Wilds | | Jul 2022 | Chaosium | Call of Cthulhu (Classic) |
| A Bridge Too Far | | 2003 | RPGA Network | Call of Cthulhu (Invictus) |
| Briefing Documents * | | 2017 | Arc Dream Publishing | Delta Green |
| The Bright Blue Demon | | Nov 2023 | Chaosium | Call of Cthulhu (Now) |
| Bringing New Life | | 2016 | Self Published | Lovecraftesque |
| Brinkmanship | GRR6405 | 2023 | Green Ronin Publishing | Cthulhu Awakens |
 Bristol Consortium | | | Self Published | Call of Cthulhu (Now), Call of Cthulhu (Delta Green) |
| The Bristol Train Robbery | | Jan 2025 | Chaosium | Call of Cthulhu (Gaslight) |
| Britannia and Beyond | | Sep 2023 | Golden Goblin Press | Call of Cthulhu (Invictus) |
| The Brockton Butcher | | Jul 2021 | Chaosium | Call of Cthulhu (Now) |
| Broken Arrow: Chernobyl | | Aug 2021 | Chaosium | Call of Cthulhu (Now) |
| Broken Dreams | | Oct 2023 | Chaosium | Call of Cthulhu (Dreamlands), Call of Cthulhu (Classic) |
| Broken Glass | | Dec 2022 | Chaosium | Call of Cthulhu (Now) |
| Brown Jenkin | PGCW-U29 | 2019 | Petersen Games | Cthulhu Wars |
| The Brunholt Head | | 2002 | Self Published | Call of Cthulhu (Now) |
| The Brutal House | | Apr 2022 | Chaosium | Call of Cthulhu (Now) |
| BTMOM Game Aids * | CHA0337 | 2007 | Chaosium | Call of Cthulhu (Classic) |
| Bubastis | | Jun 2020 | Petersen Games | Cthulhu Wars |
| Bubbles and Troubles | | 2011 | Self Published | Cthulhu Dark |
| The Bubonic Plagiarist | 1 | 1987 | Self Published | Call of Cthulhu (Classic) |
| The Bubonic Plagiarist | 2 | 1987 | Self Published | Call of Cthulhu (Classic) |
| The Bubonic Plagiarist | 3 | 1987 | Self Published | Call of Cthulhu (Classic) |
| Buffalo Bill and the Southsea Horror | | Jul 2025 | Chaosium | Call of Cthulhu (Gaslight) |
| Builders of R'lyeh | | 2012 | Self Published | Builders of R'lyeh |
| Building an Elder God | SGL-2002 | 2011 | Signal Fire Studios | Building an Elder God |
| Bumps in the Night | PAG1014 | 2012 | Pagan Publishing | Call of Cthulhu (Classic) |
| Bunny the Eldritch Slayer | | Jun 2025 | Chaosium | Call of Cthulhu (Now) |
| Bureau of Investigation | | 2022 | Space Cowboys | Bureau of Investigation |
| The Buried Zikurat | DNH2 | 2017 | Fat Goblin Games | Dungeons and Dragons |
| The Buried Zikurat | DNH2 | 2017 | Fat Goblin Games | OSR |
| The Buried Zikurat | DNH2 | 2017 | Fat Goblin Games | Pathfinder |
| Burn After Reading Card * | | 2020 | Fantasy Flight Games | Arkham Horror: The Card Game |
| Burning Desire | | Dec 2023 | Chaosium | Call of Cthulhu (Now) |
| Burning Horizon | WDF23301 | 2011 | WildFire Games | CthulhuTech |
| The Burry Man | | Oct 2022 | Chaosium | Call of Cthulhu (Classic) |
| Burton's Motel | | May 2025 | Chaosium | Call of Cthulhu (Classic) |
| Busilak | | Apr 2019 | Chaosium | Call of Cthulhu (Classic) |
| The Butcher of Queen Vic Market | | Nov 2023 | Chaosium | Call of Cthulhu (Classic) |
| By the Book | | 2021 | Fantasy Flight Games | Arkham Horror: The Card Game |
| By the Pricking of my Thumbs | | May 2021 | Chaosium | Call of Cthulhu (Now) |