Things You'll Need
Instructions
Download "3D Analyzer" and save it to your desktop. Double click on "dontlinkthefile_3danalyzer-v236.exe" and follow the on-screen installation instructions. An icon will appear on your desktop once the installation is complete.
Double-click on the 3D Analyzer icon to take you to the main screen. Press the large "Select" button. A pop-up screen will appear listing all your drives and folders. Select "Computer," "Drive C:" and choose the folder in which "Roller Coaster Tycoon 3" is installed. Double-click on the game's main executable file (which will be labeled "rct3.exe" or something similar). You will be taken back to the 3D Analyzer main screen.
Press the "Run" button and "Roller Coaster Tycoon 3" will launch, allowing you to play the game without a graphics card.