Before downloading, ensure your PC can handle the simulation: Minimum Requirements Windows 7 SP1 / 8 / 8.1 / 10 (64-bit)
Open the extracted folder and run the Setup.exe file as an Administrator.
A standard installation might require several gigabytes, but a compressed version can be reduced by 50% or more.
Use a tool like WinRAR or 7-Zip. Right-click the file and select "Extract Here."
Locate a trusted source for the highly compressed file (usually in .RAR or .7Z format).