A Players' Bill of Rights or Gamers' Bill of Rights is a suggested set of best practices for either game design or game software that has been presented in the style of a historical bill of rights. There have been numerous such proposals, including those by Graham Nelson in 1994, Raph Koster in 2000, Ernest W. Adams in 2004, and Brad Wardell in 2008.
References
Players' Bill of Rights Wikipedia(Text) CC BY-SA