• On TourKen McMurtry
• Once HumanAnthony Lampe
• One GoalN.J. Corbo
• One Night in Payne HouseR.L. Stine
• Opening DayMitch Gelman
• Operation Lightning StrikeRay Santos
• Operation: Deadly DecoyR.L. Stine
• Operation: Death StoneBarbara Siegel, Scott Siegel
• Operation: Death-RayH. William Stine, Megan Stine
• Operation: Dragon FireWilliam Sno
• Operation: Jungle DoomLynn Beach
• Operation: Killer CometS.M. Ballard
• Operation: MindbenderR.L. Stine
• Operation: Night FlightWilliam Sno
• Operation: Poison DartH. William Stine, Megan Stine
• Operation: Robot AssassinH. William Stine, Megan Stine
• Operation: Sink or SwimBarbara Siegel, Scott Siegel
• Operation: Snow JobBarbara Siegel, Scott Siegel
• Operation: Star RaiderEric Affabee
• Operation: Terror TrapG.V. Macrae
• Operation: ThunderboltK.C. Edwards
• Operation: Tiger StrikeWilliam Sno
• Operation: Time MachineLynn Beach
• Operation: Weapons DisasterJames M. Ward
• Oranges in the SnowMark Foster, Phillip Burrows
• Out at HomeLisa M. Bolt Simons
• Out of the WildernessSusan E. Hilliard
• Outlaw GulchRamsey Montgomery
• Outlaws of Sherwood ForestEllen Kushner
• Over the Blood-Dark SeaDave Morris, Jamie Thomson
• Overlord!Jamie Thomson, Mark Smith
• Paranormal HeroJames A. Hirons
• Paranormal Hero 2: The Nightmare's LairJames A. Hirons
• Pastrami ProjectAllison Bottke, Heather Gemmen
• Path of the CrusadersKen McMurtry
• PathogensJames Schannep
• Paul Revere and the Boston Tea PartyMarc Kornblatt
• Peacemaker: The Absorbing RockSindri Valthorsson
• Peril from the StarsDave Morris
• Permafrost!Rex Talionis
• Peter Pan in Never-LandJim Razzi
• Petrified WorldJeff A. Storm
• PH's Great Puffle SearchTracey West
• Phantoms of FearRobin Waterfield
• Pick the PlotJames Riley
• Pick Your PleasureJayne Rylon
• Pick Your Pleasure 2Jayne Rylon
• Pillars of PentegarnRose Estes
• Pinocchio's AdventuresJim Razzi
• Pipe DownClyde Bosco
• Pirate GoldSteve Barlow, Steve Skidmore
• Pirate QueenSteve Barlow, Steve Skidmore
• Pirates of the Splintered IslesOliver Hulme
• Planet of TerrorDon L. Wulffson
• Planet of the DragonsRichard Brightfield
• Planets in PerilChristopher Black
• Plant Your PathTracey West
• Play the GameNova Weetman
• Playoff ChampionFelix Von Moschzisker
• Please Don't Feed the Vampire!R.L. Stine