From the Autodesk App Store:
AT+Sync lets you export and synchronize Autodesk® Revit® projects into Unity scenes. Connect your usual Revit workflow with Unity and sync any change you make on your file in real-time.
Move objects, edit families, delete or add walls and windows: all the changes will be updated in Unity just pushing one single button.
AT+Sync generates a dynamic workflow for real-time advanced presentations of your BIM projects.
AT+Sync plugin works with a twin plugin on Unity3D: you can download Unity here and the Sync Unity plugin here.
AT+Sync lets you export and synchronize Autodesk® Revit® projects into Unity scenes. Connect your usual Revit workflow with Unity and sync any change you make on your file in real-time.
Move objects, edit families, delete or add walls and windows: all the changes will be updated in Unity just pushing one single button.
AT+Sync generates a dynamic workflow for real-time advanced presentations of your BIM projects.
AT+Sync plugin works with a twin plugin on Unity3D: you can download Unity here and the Sync Unity plugin here.