This title installs and requires the Steam Client to play. Initial installation requires one-time internet connection for Steam authentication; software installations required (included with the game) include Steam Client, Microsoft DirectX, Visual C++ 2005 Redistributable (ATL), Visual C++ 2008 Redistributable, and AMD Dual Core Optimizer. (AMD optimizer required only for specific AMD processors to run the game correctly, but installs for all of them.) Software license terms available at www.take2games.com/eula. Non-transferable access to special features such as exclusive, unlockable, downloadable or online content, services, or functions may require single-use serial code, additional fee and/or online account registration (13+). Access to special features may require internet connection, may not be available to all users, and may, upon 30 days notice, be terminated, modified or offered under different terms. Online play and download requires broadband internet service. User responsible for associated fees. Product offered subject to your acceptance of the 2K Games License (see in game manual and at www.take2games.com/eula and Steam Subscriber Agreement (”SSA”). You must activate this product via the Internet by registering for a Steam account and accepting the SSA. Please see www.steampowered.com/agreement to view the SSA prior to purchase.