True 20

True20

True20 Adventure Roleplaying
Designer(s)	Steve Kenson
Publisher(s)	Green Ronin Publishing
Publication date	2005
Genre(s)	Universal, Fantasy, Science Fiction, Horror
System(s)	True20

True20 is an award-winningrole-playing game system designed by Steve Kenson and published by Green Ronin Publishing. The system was first published as a part of the Blue Rose RPG before being published as a standalone universal generic role-playing game, True20 Adventure Roleplaying.

The True20 system was originally used in Green Ronin's award-winningBlue Rose, itself based on their multiple-award winning Mutants & Masterminds RPG. Later that year, Green Ronin released a PDF distillation of the Blue Rose rules, with an appendix of some modern-era rules, as a generic form of the game. This was followed by an expanded hardcover release in 2006. A revised softcover rulebook, combining the rules section of the True20 Adventure Roleplaying book with the True20 Companion was released April 25, 2008.

The original setting for the system was the Blue Rose in which the system first saw print. In its generic role-playing game, the original hardcover printing of the True20 Adventure Roleplaying book included four sample settings. These were chosen among publisher submitted setting with the winners announced in Dragon Magazine:

The Revised Edition has four different settings:

A follow up volume, True20 Worlds of Adventure includes five additional settings:

Utilizing the Open Gaming License, True20 is derived from Wizards of the Coast's d20 System. Differences from the parent game include the following:

Since before its release, the True20 system has been open to users under the terms of the Open Gaming License. To use the True20 logo though required a separate license and license fee purchased from Green Ronin. Several companies have taken advantage of this to produce their own True20 titles.

On April 12, 2008, Chris Pramas of Green Ronin Publishing announced a new, free licensing agreement with third-party publishers to produce True20 products. Details were posted on the company’s website and forums, and met with praise from publishers, freelancers and players alike.