2K has announced the availability of the Gods & Kings, the expansion pack for Civilization V on Mac and PC. The expansion is available today in the US, and will be released internationally on June 22. The expansion contains new technology, 27 new units, 13 new buildings and nine new Wonders. It also contains new civilizations, scenarios, the religion, new city-states, world domination and enhanced diplomacy and espionage. It will run you $29.99. Watch the launch trailer below.