Serious games can be influenced by various political forces including employment laws, governmental funding, certification requirements, local restrictions, and interest groups. Examples of serious games that have been impacted are the flight simulator X-Plane which is FAA certified, America's Army which is used for US Army recruitment and training, and McDonald's uses serious games to train employees. As the serious games industry continues to grow into a multi-million dollar business, the related legal and political influences will also increase, providing both restrictions and opportunities for game developers through things like local regulations and government subsidies.