Ensure you have downloaded all parts of the game if it was split into multiple .rar archives.
Many online-enabled versions from HaDoanTV require Steam to be running in the background (often with a secondary "Spacewar" app entry) to facilitate multiplayer. Troubleshooting [HaDoanTV.Com]ES.ON.rar
For detailed video guides on extracting and installing these specific archives, you can check the HaDoanTV Tutorial page . Ensure you have downloaded all parts of the