If you are missing textures or other content in game or experiencing crashing while playing a game,
you can have Steam verify that the game's files are installed correctly on the computer.
[Verify Integrity of Game Files]
1. Restart your computer and launch Steam
2. Next, you can either right click the game in your Library, or click the gear icon from the game's Library page on the far right
3. From the drop down menu, select Properties...
4. Select the Local Files tab and click the Verify integrity of game files... button