Tony Hawk's Underground 2 Full Version: Download and extract "THUG2.Full.zip" Mount the extracted image to a virtual drive. Run "Launch.exe" or "setup.exe", to install the game. When prompted during install, use "RLDTHUG2.exe" to generate a serial key. Rip Version: Download and extract "THUG2.Rip.rar" Run "_Unpak.bat" to install.