As a seminal turn-based strategy game released in 2005, Civilization IV tasks you with guiding a nation from antiquity to the future across a hex-based map. The core loop involves exploring, expanding, exploiting resources, and engaging in diplomacy or warfare. Distinctive features include the deep integration of Civics for societal structure, the ability to found and spread Religion, and the acquisition of Great People who grant unique bonuses. This title is available on PC and Mac and has received major expansions that deepen its strategic complexity.
The gameplay loop revolves around the classic 4X structure: eXplore, eXpand, eXploit, and eXterminate. Players begin with a single settler unit and must strategically choose where to found their first city. From there, the management of city resources, production queues, and citizen assignments becomes crucial for growth. A key mechanic introduced in this installment is the emphasis on Civics, which allows players to select governmental and societal structures that influence everything from religious freedom to economic policy, fundamentally shaping the character and capabilities of their civilization.
Technological advancement is handled via a comprehensive tech tree, unlocking new units, buildings, and civic options as research progresses. Diplomacy involves complex interactions with rival leaders, utilizing trade agreements, espionage, and declarations of war. Combat is resolved through tactical positioning and unit composition on a hexagonal map grid.
A defining feature of this title is the integration of religion as a powerful, manageable resource. Players can found religions and spread their influence across the map, impacting city happiness, trade routes, and even providing unique bonuses. Furthermore, the game introduced the concept of Great People—historical figures like scientists, artists, and prophets—who can be earned through high cultural or scientific output and used to trigger powerful, game-changing abilities or construct unique wonders.
Managing an expanding empire is facilitated through detailed city management screens and the aforementioned Civic system. Players must balance the needs of their population, manage happiness levels, and ensure adequate infrastructure development, such as roads and trade connections, to support their growing territory. The introduction of specialized government types provides distinct strategic advantages and disadvantages, forcing players to adapt their long-term strategy based on their chosen path of development.
While the base game offers a complete experience, it has been supported by two major expansion packs that introduce significant new mechanics, systems, and content layers, deepening the strategic possibilities available to the player.
This strategy title is available for play on Microsoft Windows PCs and Apple Macintosh computers.
The content of this game is suitable for persons aged 12 years and over only. It contains: Non realistic looking violence towards human characters

Sid Meier's Civilization IV: Beyond the Sword is the second expansion pack for Civilization IV - the 2005 PC Game of the Year that has become a worldwide hit. The expansion focuses on the time periods after the invention of gunpowder and delivers 11 unique and challenging scenarios created by the development team at Firaxis as well as esteemed members of the Civ Community. Civ IV: Beyond the Sword also includes ten new civilizations, sixteen new leaders, five new wonders, and a variety of new units that offer even more fun and exciting ways for players to expand their civilization's power as they strive for world domination. Expanded Epic Game: Adds a massive increase of new units, buildings, and technologies to the epic game with a tremendous amount of effort focused on the late game. New Game Scenarios: 11 new scenarios custom-designed by the team at Firaxis and some members of the Civ Fan Community. New Civilizations: 10 new civilizations, such as Portugal, Babylonians, and Netherlands and their associated unique units and buildings. More Civilization Leaders: Sixteen new leaders, both for the new civilizations as well as additional leaders for existing civilizations, including Hammurabi of the Babylonians, Abraham Lincoln of the United States, and Sitting Bull of the Native Americans. Corporations: A new game feature similar to religion allows players to found companies and spread them throughout the world. Each corporation provides benefits in exchange for certain resources. Espionage: Now available earlier in the game, this feature offers players many new ways to spy on opponents, stir citizen unrest and defend government secrets. Events: New random events - such as natural disasters and pleas for help or demands from their citizens - challenge players with obstacles that must be overcome for their civilization to prosper. New Wonders: Five new wonders await discovery, including the Statue of Zeus, Cristo Redentor, the Shwedagon Paya, and the Mausoleum of Maussollos. Expanded Space Victory: Winning the race to Alpha Centauri will now require more strategic planning and tactical decision making. Apostolic Palace: The United Nations is available earlier in the game, providing a way to win a diplomatic victory earlier. In addition, new resolutions expand the available diplomatic options. Advanced Starts: A major fan request, this new feature enables players to 'buy' components of a custom-tailored empire and begin play in the later part of the game, allowing one to experience many of the new features of the expansion in a shorter amount of time. Advanced AI: The greatly-enhanced AI now relies more on smart play and less on handicap bonuses to remain competitive, providing a more consistent challenge throughout the course of the game, both economically and militarily. The ways in which the AI attempt to achieve victory have also been expanded.

Sid Meier's Civilization IV: Warlords is the first expansion pack for the award-winning game that has become an instant world-wide hit. Paying homage to some of history's greatest military leaders, the expansion delivers six unique and interesting scenarios, giving players the chance to change the course of history with the help of their new powerful "warlord" unit. Civ IV: Warlords includes new civilizations, leaders, units, and wonders that offer even more fun and exciting ways for players to expand their civilization's military power as they strive for world domination. Game scenarios: the expansion delivers eight scenarios. New civilizations: the pack provides six new civilizations and associated unique units. Civilization leaders: 10 new leaders, including leaders for the new civilizations as well as additional leaders for existing civilizations.