• The Canoeing SafariT.J. Matthews
• The Captives of KaagJoe Dever
• The Cardinal's SnuffboxKenneth Roseman
• The Case of Charles Dexter WardEdward T. Riker
• The Case of the Cheese ThiefJ. E. Bright
• The Case of the Clown CarnivalLaurie S. Sutton
• The Case of the Fright FlightMichael Anthony Steele
• The Case of the Gentleman GhostMilo Dennison
• The Case of the Mummy's TombMilo Dennison
• The Case of the Phantom TreasureMilo Dennison
• The Case of the Silk KingShannon Gilligan
• The Castle of Blackwood MoorsDavid Konkol
• The Castle of CondemnationJames Aukett
• The Castle of DarknessJ.H. Brennan
• The Castle of FromeEdward Packard
• The Castle of No ReturnR.G. Austin
• The Cauldron of FearJoe Dever
• The Cave of TimeEdward Packard
• The Cavern of DoomSteve Meretzky
• The Caverns of KalteJoe Dever
• The Caverns of MornasRichard Brightfield
• The CEO: An Interactive BookDuff McDonald, Owen Burke
• The Cereal Box AdventuresBarbara Bartholomew
• The Champ of TV WrestlingBarbara Siegel, Scott Siegel
• The Change Ninja HandbookDr. Tammy Watchorn
• The Chasm of DoomJoe Dever
• The Child Labor Reform MovementSteven Otfinoski
• The Chocolate FactoryConnor Hoover
• The CircusEdward Packard
• The Citadel of ChaosSteve Jackson
• The CityGraeme Davis
• The City of GateAntonyM Copeland
• The Civil Rights MovementHeather Adamson
• The Civil WarMatt Doeden
• The Class Project ShowdownRick Blanchette
• The Classics ProfessorMichael Hemmingson
• The Cloistered TearsJoe Cheal
• The Cobra ConnectionLouise Munro Foley
• The Coils of HateMark Smith
• The Coldest WarColin Brake
• The Colonists RevoltMatt Doeden
• The Colour out of SpaceEdward T. Riker
• The Comet MastersEdward Packard
• The Computer TakeoverEdward Packard
• The ContestGraeme Davis
• The Corinthian ProjectDavey Moore
• The Cosmic FunhouseChristopher Black
• The Counterfeit CollectionAnn Wald
• The Court of Hidden FacesDave Morris, Jamie Thomson
• The Creature from Miller's PondSusan Saunders
• The Creepy Creations of Professor ShockR.L. Stine
• The Crime LordJak Shadow
• The Crimson SeaFlint Dille, Gary Gygax
• The Crimson TidePaul Mason
• The CrownGraeme Davis
• The Crown of KingsSteve Jackson
• The Crown Vs Dr. WatsonGerald Lientz
• The Crypts of TerrorJ.H. Brennan
• The Crystal MazeDave Morris, Jamie Thomson
• The Crystal QuestLaurie S. Sutton