Editing D20 System (section)

===2000–2003: d20 boom===
Initially there was a boom in the RPG industry caused by its use of the d20 license, with numerous companies publishing their own d20 supplements. Some companies used the d20 system to attempt to boost the sales of their proprietary systems, such as [[Atlas Games]] and [[Chaosium]], while many other publishers produced d20 content exclusively, including existing companies such as [[Alderac Entertainment]], [[Fantasy Flight Games]], and [[White Wolf Publishing]], as well as new companies like [[Goodman Games]], [[Green Ronin]], [[Mongoose Publishing]], and [[Troll Lord Games]].<ref name="designers" />{{rp|287}} The success of the d20 license helped create an industry for [[PDF]] publishing for role-playing games to fill the demand for d20 products, where electronic delivery presented players with a very quick and inexpensive method to distribute content.<ref name="designers" />{{rp|288}}

Wizards also began using their d20 system beyond just fantasy games, including their own ''[[Star Wars Roleplaying Game (Wizards of the Coast)|Star Wars Roleplaying Game]]'' (2000) and the ''[[d20 Modern|d20 Modern Roleplaying Game]]'' (2002).<ref name="designers" />{{rp|288}} Wizards developed one of the settings from ''d20 Modern'' into the full ''[[Urban Arcana|Urban Arcana Campaign Setting]]'' (2003) sourcebook, and further extending the d20 into science-fiction with ''[[d20 Future]]'' (2004) and into historical settings with ''[[d20 Past]]'' (2005), then finished up their ''d20'' line in 2006 with the classic ''[[Dark•Matter]]'' campaign setting.<ref name="designers" />{{rp|292}} Third-party publishers used these d20 genre books to base their own campaign settings on, such as White Wolf using the ''d20 Modern'' rules to publish a licensed version of ''[[Gamma World]]'' (2006) and some supplements.<ref name="designers" />{{rp|292}}