: During setup, the game may prompt you to install DirectX 9.0c . You must have this version or higher to run the game properly. Essential PC Fixes for Modern Systems
If you are looking for a guide to help you through the missions: Guide :: Improvements for Splinter Cell: Double Agent : During setup, the game may prompt you to install DirectX 9
: You can download a trial version for Windows from Softonic to experience the early missions and mechanics. : During setup