Guide
1. Launch the Steam app and log in to your account, if necessary.
2. From the top, open the section called “Library”. In the list on the left, look for the game STALCRAFT: X.
3. Right-click on STALCRAFT: X. In the list that appears, click the “Properties” button.
4. Open the “Installed files” section and press the “Verify integrity of game files” button.
5. Wait for the checking process to complete. Its speed depends on the performance of your device.
6. The system will re-download the corrupted files if it detects any. The game can then be started.