Use a modern extraction tool like 7-Zip (recommended) or WinRAR . 🚀 How to Install Right-click on CityBusManager.part1.rar . Select "Extract Here" or "Extract to CityBusManager/" .
You are missing one of the numbered parts in the sequence. CityBusManager.part1.rar
Which of the game are you trying to install? Use a modern extraction tool like 7-Zip (recommended)