GameSpot has details on the cost of America's Army, saying the Unreal-engine first-person shooter created by the US Army as a recruiting aid has cost taxpayers 32.8 million dollars in the decade the project has been underway. GameSpot actually filed a Freedom of Information Act request to get this info, though some aspects of the request were denied because "disclosure of this information is likely to cause substantial harm to the Department of the Army's competitive position in the gaming industry." They also include a summary of the annual expenditures on the game:

America's Army year-by-year budget summary
2000--$3,500,000
2001--$5,600,000
2002--$1,862,985
2003--$2,600,000
2004--$3,866,482
2005--$1,288,552
2006--$4,050,748
2007--$2,788,137
2008--$3,887,450
2009--$3,395,702