I'm playing the game on Steam and receive a "Fatal Error" when loading the game
We are currently investigating issues regarding the Unknown or Fatal Error that some players are experiencing upon launching the game. Some users report that installing the newest Windows updates may help resolve this issue. Particularly, install the following updates for Windows 7:
KB2538243
KB2670838
KB3001652
Duels requires DirectX 11.0 or higher features. Check your video card documentation to confirm that it supports DirectX 11.0 features, including Pixelshader 3.0. Note that even if you have DirectX 11 or higher installed on your Operating System, your video card must also support DirectX 11.0 or higher.