Command & Conquer 3 gameplay typically requires the player to construct a base and acquire resources, in order to fund the ongoing production of various types of forces with which to assault and conquer the opponent's base. All available structures of the faction chosen by the player are constructed on-site at so-called "construction yard" or "drone platform" buildings - which typically begin as large-sized vehicles or aircraft capable of deploying themselves into the aforementioned construction yards or drone platforms - or alternatively at the supporting "crane" and "foundry" structures. When a construction yard, drone platform, crane or foundry has finished building a new structure, the player can select a spot near an existing structure to place it, whereupon building will then rapidly pop up into existence.
Tiberium is the sole resource and is usually gathered from fields of Tiberium crystals scattered around the map. The crystals are gathered by harvester vehicles, which unload their cargo refineries, turning the Tiberium into money.
All three factions have structures and units with similar functions at their disposal. However, they are adjusted to fit each faction's theme and have somewhat varying properties. Units can be classified into infantry, vehicles and aircraft, each with their own subdivisions (against infantry, vehicles, aircraft, structures and combinations thereof). Unit effectiveness against opponents follows the rock-paper-scissors principle found in most real-time strategy games.
Virtually every type of structure in the game acts as a tech tree node, and additional units, structures and faction-specific abilities will become available as new structures are built and placed. Access to advanced units and abilities may be temporarily blocked if the required structures are destroyed, or if they are not being provided with adequate power by the supporting "power plant" structures.
Base defense is provided by specialized defensive towers. Later on in the game, the player can begin to build lethal defensive structures such as the Global Defense Initiative's "Sonic Emitters", the Scrin's "Storm Columns" or the iconic "Obelisk of Light" of the Brotherhood of Nod.
Windows XP, Windows Vista (32-bit; 64-bit versions of Vista are not supported)
2.0GHz or better, or AMD equivalent
512MB or better
8x or faster DVD-ROM Drive
8.0GB or more of free hard disk space
GeForce4, ATI Radeon 8500 or be