Invert Selection

The Invert Selection tool selects the inverse of the current selection: all unselected elements become selected, while the current selection becomes unselected.

Invert Selection Example

In this example:

Left image: All tiles except the corners are selected.
Right image: the Invert Selection tool changes the selection so that only the corners are selected.

This tool is available in the vertex, edge, and face modes.

Tip: You can also use this tool with the Ctrl/Cmd+Shift+I hotkey, or from the ProBuilder menu (Tools > ProBuilder > Selection > Invert Selection).