- House of HellSteve Jackson
- How I Became a FreakRichard Brightfield
- How to Get to RioJulie Fison
- How to Wake a Sleeping BeautyKevin Scally
- Howard Pyle's Merry Adventures of Robin HoodBrandon Terrell
- Howl of the WerewolfJonathan Green
- Hunk and the HydraAnthony Lampe
- HuntedDavid Lowrie
- Hurricane!Richard Brightfield
- HyperspaceEdward Packard
- I Guerrieri OmbraStephen Hand
- Ice Age ExplorerDougal Dixon
- Ice CaveSusan Saunders
- Ice DancerElizabeth Buchan
- Ice StrikeSteve Barlow, Steve Skidmore
- In Search of a SharkPeter Lerangis
- In Search of the Lost LandRuth Pracy
- In the Realm of DragonsGeorge Ivanoff
- Inca GoldJim Becket
- Indian TrailR.A. Montgomery
- Indiana Jones and the Ape Slaves of Howling IslandR.L. Stine
- Indiana Jones and the Cult of the Mummy's CryptR.L. Stine
- Indiana Jones and the Cup of the VampireAndy Helfer
- Indiana Jones and the Curse of Horror IslandR.L. Stine
- Indiana Jones and the Dragon of VengeanceHenry William Stine, Megan Stine
- Indiana Jones and the Eye of the FatesRichard Wenk
- Indiana Jones and the Giants of the Silver TowerR.L. Stine
- Indiana Jones and the Gold of Genghis KhanEllen Weiss
- Indiana Jones and the Legion of DeathRichard Wenk
- Indiana Jones and the Lost Treasure of ShebaRose Estes
- Indiana Jones and the Mask of the ElephantHenry William Stine, Megan Stine
- Infantry Combat: The Rifle PlatoonJohn Antal
- InfectedJames Schannep
- Inferno!Jamie Thomson, Mark Smith
- Innsmouth: The Stolen ChildSimon Birks
- Inside UFO 54-40Edward Packard
- Instant MillionaireJovial Bob Stine
- Intergalactic Voyager: Skylab is failingChris Holley
- Into ChinaDan Greenberg
- Into the Dragon's DomainBrian Allanson
- Into the DungeonHari Conner
- Into the Hollow EarthAnson Montgomery
- Into the Jaws of DoomR.L. Stine
- Into the JungleMatt Forbeck
- Into the SunJohn Norton
- Into the TowerHari Conner
- Into the Twister of TerrorR.L. Stine
- InvadersAndrew Chapman
- Invaders from DarklandLynn Beach
- Invaders from the Big ScreenR.L. Stine
- Invaders from the Lost GalaxyJohn Norton
- Invaders from WithinEdward Packard
- Invaders of the Planet EarthRichard Brightfield
- Invasion of the Black SlimeR.G. Austin
- Invasion of the Botty SnatchersSteve Barlow, Steve Skidmore
- Invasion of the MutantsStephen Mooser
- Invasion of the OrmazoidsPhilip Martin
- Invitation to MurderAllen Sharp
- Island of DoomRichard Brightfield
- Island of FearDave Morris