Rise of Nations is a real-time strategy computer game, developed by Big Huge Games and published by Microsoft Game Studios on May 20, 2003. The development of the game was led by veteran game designer Brian Reynolds, of Civilization II and Sid Meier's Alpha Centauri. The game has taken several concepts from turn-based strategy games such as territories and attrition warfare. Rise of Nations features 18 civilizations, playable through eight ages of world history. Rise of Nations: Extended Edition is a re-release of the main game and its expansion. It released for Steam on June 12, 2014 and for the Windows 10 Store on September 14, 2017 with Xbox Live achievements and cross-play with the Steam version. Graphical changes to the game include updated textures, lighting and water. Other changes to the game include Steamworks integration which adds cloud saves, Steam Trading Cards, achievements, Twitch integration and multiplayer with Elo ranked matches to the game. Extended Edition is developed by SkyBox Labs. Rise of Nations Extended Edition builds upon the original game with full Steamworks integration and enhanced features, including Twitch.tv streaming! Play with 18 nations, command an array of units, build Wonders of the World and buildings – all to increase your power and dominate the world!Start with a single city in the Ancient Age; gather resources; build an infrastructure; research technologies; construct Wonders of the World such as the Pyramids and the Eiffel Tower; and expand your military might across the world, conquering hostile nations with bombers, battleships, and tanks—all over your lunch hour!