This article demonstrates how to load Arcade in Reason:
Open Reason
Open the Rack View
Click on Add Device in the Rack View
Choose Instruments > Output > Arcade
Click Open in the Instrument Rack Device
Troubleshooting:
If you're unable to locate Arcade inside Reason we recommend the following:
Open Reason’s Preferences Menu
Navigate to the Advanced tab
Ensure the following file paths have been added:
Windows:
C:\Program Files\VSTplugins
C:\Program Files\Common Files\VST3
Mac:
Library/Audio/Plug-Ins/VST
Library/Audio/Plug-Ins/VST3
Library/Audio/Plug-Ins/Components
Restart Reason to rescan