Open Game License
Open Game Content
GigaDungeon uses game mechanics, monster statistics, spells, feats, skills and equipment derived from the System Reference Document (the "SRD") for the 3.5 edition of the world's most popular roleplaying game, under the terms of the Open Game License version 1.0a. Those mechanics are Open Game Content. Everything else in GigaDungeon — its name, the dungeon, room descriptions, custom items such as earrings, the artwork, code and user interface — is Product Identity and is not Open Game Content.
Section 15 — Copyright Notice
Open Game License v 1.0a Copyright 2000, Wizards of the Coast, Inc. System Reference Document Copyright 2000-2003, Wizards of the Coast, Inc.; Authors Jonathan Tweet, Monte Cook, Skip Williams, Rich Baker, Andy Collins, David Noonan, Rich Redman, Bruce R. Cordell, John D. Rateliff, Thomas Reid, James Wyatt, based on original material by E. Gary Gygax and Dave Arneson. GigaDungeon Copyright 2026, HATCHideas, James Hatch.
The licence
The OGL requires the full text of version 1.0a to accompany any Open Game Content you distribute. Paste the complete licence text (from the publisher's SRD distribution or an archived copy) into the block below, replacing the placeholder, before public release.
[The OGL can be viewed here: https://opengamingfoundation.org/ogl.html]