This is the first version of Navigator to use the most common house interface. This version was also only released with Windows for Workgroups 3.11, not Windows 95.
This version of the Navigator house would later be used in versions 3.5 and 3.6, both of which are almost identical to 3.0. The main difference is that in 3.0, Ark Workspace and Ark Kidspace could only be accessed through the Windows Program Manager, not Navigator. Also, Workspace was the older "2D" version.