This expansion contains 9 new countries for Nuclear War, an extra set of population cards, 5 extra warhead cards, and a bumper sticker. The new countries include Litigation Land, which allows you to sue other players; Magpie, which has the power to copy others; and Recycleland, where you can recycle dud warheads. This set allows you to play with a larger group of people and increases the fun. Nuclear War Bonus Pack #3 has the same contents as #1 except it contains the newer style population cards as found in Weapons of Mass Destruction rather than the old style from the earlier games.