Game System License

The Game System License is a license that allows third-party publishers to create products compatible with and using the intellectual property from the 4th edition of Dungeons & Dragons (D&D).[1] It was released to the public by Wizards of the Coast (WotC) on June 17, 2008.

A System Reference Document (SRD) of the 3rd edition of D&D had been licensed under the Open Gaming License (OGL). The OGL is a copyright license, allowing the use of copyrighted text created by others in one's products. Also released at the same time was the d20 System Trademark License, allowing third-party publishers to indicate compatibility using a system logo, but not allowing the use of the D&D trademark.

The GSL, however, grants use of the 4th Edition System Reference Document, which lists trademarks, words, and short phrases that could be used to refer to materials in the Dungeons & Dragons 4th edition rules, but contains no rules itself. People wishing to use this license are also granted a logo that must be placed onto their products to state that they are compatible with Dungeon & Dragons 4th Edition.[1] The license also can be updated by Wizards of the Coast and updates affect all licensees; in case of litigation the licensees must pay the legal costs of Wizards of the Coast.

Prior to Gen Con 2008, it was announced that the GSL was undergoing a revision.[2] Shortly after the end of the convention a number of Wizards of the Coast's jobs were eliminated, including the Licensing Manager position that was held by Linae Foster.[3]

With the release of the 5th edition of D&D in 2014, and the release under the OGL of an SRD for that edition, the GSL fell into disuse, though it remains the only license for 4th edition.

References

Dungeons & Dragons

Basics

General	Controversies Editions Gen Con Popular culture Film series Related products Retro-clones RPGA Sources and influences
Gameplay	Adventures Alignment Attribute Dungeon Master Game mechanics Magic Magic item Miniatures Psionics
Creators	Gary Gygax Dave Arneson Keith Baker Richard Baker Ed Greenwood Jeff Grubb Tracy Hickman Robert J. Kuntz Mike Mearls Frank Mentzer Chris Perkins Jim Ward Margaret Weis
Companies	TSR Wizards of the Coast Grenadier Models Judges Guild Paizo Ral Partha Strategic Simulations WizKids
Licenses	Game System License Open Game License System Reference Document

Geography and cosmology

Campaign settings	Al-Qadim Birthright Blackmoor Council of Wyrms Dark Sun Dragonlance Eberron Forgotten Realms Neverwinter Ghostwalk Greyhawk Kara-Tur Kingdoms of Kalamar Mystara Planescape Ravenloft Ravnica Rokugan Savage Coast Spelljammer Theros
Planes of existence	Material Plane Abeir-Toril Athas Eberron Mystara Oerth Underdark Sigil Inner Plane Outer Plane

Characters and beings

Races	Dragonborn Dwarf Eladrin Elf Gnome Halfling Half-elf Tiefling
Classes	Artificer Barbarian Bard Cleric Druid Fighter Monk Paladin Ranger Shaman Sorcerer Rogue Warlock Wizard List of alternative classes
Character lists	Dragonlance Forgotten Realms Greyhawk Ravenloft
Notable characters	Drizzt Do'Urden Elminster Iggwilv Raistlin Majere Mordenkainen Lord Soth Vecna Strahd von Zarovich
Creatures and monsters	Celestials Dragons Elementals Fiends Giants Oozes Outsiders Beholder Drow (dark elf) Illithid (mind flayer) Lich
Deities and powers	2nd edition monsters Archdevils Demon lords Greyhawk deities

Publications

Core rulebooks	Player's Handbook Dungeon Master's Guide Monster Manual
Classic boxed sets	Dungeons & Dragons (original) Basic Expert Companion Master Immortals Rules Cyclopedia
Supplements	Arms and Equipment Guide Battlesystem Book of Exalted Deeds Book of Vile Darkness Deities & Demigods Draconomicon Dungeon Master Option: High-Level Campaigns Fiend Folio Forgotten Realms Campaign Setting Libris Mortis Manual of the Planes Player's Option: Combat & Tactics Player's Option: Skills & Powers Player's Option: Spells & Magic Psionics Handbook AD&D 2nd edition D&D 3rd edition D&D v3.5 Expanded and Complete Unearthed Arcana Wrath of the Immortals
Notable modules	List of Eberron modules and sourcebooks Against the Giants Dead Gods Desert of Desolation Dragonlance Expedition to the Barrier Peaks The Gates of Firestorm Peak The Isle of Dread The Keep on the Borderlands The Lost Caverns of Tsojcanth Queen of the Spiders Ravenloft Red Hand of Doom The Ruins of Undermountain The Temple of Elemental Evil Tomb of Horrors White Plume Mountain
Online tools	D&D Beyond

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