From what I understand, the "games" are called " actuarial assumptions. Of course what is assumed and what happens can be different. Standard ones I read are 8% annual returns and 3% inflation. Some are starting to pull the assumed rate of return to the 7-7.5% range. There are many posters here who work in these matters for a living, so hopefully they catch this and correct my mistakes. There are many assumptions they must make to determine funding %, although the assumptions have to meet certain acceptable standards. From what Ive read, pension systems funded above 80% are considered in good shape. Of course, one poster recently mentioned,the funding percentages maybe assumed based on incorrect values assigned to certain illiquid assets that arent easily sold. Ive learned that there is some "art" to the "science" of accurate funding percentages.