Madness in Freeport : a D20 System Adventure, by Simoni, William
Magic of Faerun (Dungeons & Dragons d20 3.5 Fantasy Roleplaying), by Reynolds, Sean K., McCoy, Angel Leigh
Make Your Own Luck (13th Age), by Gareth Ryder-Hanrahan
Manual of the Planes (Dungeon & Dragons d20 3.0 Fantasy Roleplaying), by David Noonan, Bruce R. Cordell, Jeff Grubb
Map Folio 3-D (Dungeon & Dragons Accessories), by Wizards Team
Marauders of the Wolf: The Dwarves (Sovereign Stone: D20 System), by Lichucki, Michael, Ward, James
Mastermind (Spycraft D20 Spy Game), by Crow, Steve, Flagg, Alexander, Flory, B. D., Oliver, Clayton A.
Maze of Zayene Tower Chaos (d20 Generic System), by
Metal Gods, by Various
Midnight RPG Legends Of Shadow, by Fantasy Flight Games
Midnight, Second Edition, by Fantasy Flight
Midnight: Heart of Shadow, by Iain J. brogan, Eric Olson
Midnight: Sorcery & Shadow, by Fantasy Flight Games
Monster Manual II (Dungeons & Dragons d20 3.0 Fantasy Roleplaying Supplement), by Bonny, Edward, Winter, Steve, Redman, Rich, Grubb, Jeff
Monster Manual III (Dungeons & Dragons d20 3.5 Fantasy Roleplaying Supplement) (No. 3), by Wizards Of The Coast
Monster's Handbook: A Sourcebook for Creating and Customizing d20 System Monsters (Legends & Lairs, d20 System), by Fantasy Flight Games
Monsternomicon (Privateer Press d20), by Pendrake, Viktor
Most Wanted (Spycraft), by Alex Flagg, Mark Christianson
Nightmares and Dreams II (d20 Fantasy Roleplaying Supplement, Hunt Rise of Evil), by Games, Mystic Eye
Occult Items of Power (D20), by
Pathfinder Adventure Path: The Serpent's Skull Part 1 - Souls for the Smuggler's Shiv (Pathfinde Adventure Path), by Jacobs, James
Planar Handbook (Dungeon & Dragons d20 3.5 Fantasy Roleplaying), by Cordell, Bruce R., Kestrel, Gwendolyn F.M.
Player's Guide to Faerun (Dungeons & Dragons d20 3.5 Fantasy Roleplaying, Forgotten Realms Accessory), by Wyatt, James, Baker, Richard
Power Classes XI Cabalist, by Various
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