Segue from ViewController to TabBarController

Question

I am a newbie to Swift and I try to perform the simplest task to imagine: Establish a segue from normal ViewController to TabBarController.

I've already given the segue an Identifier ( "intoGame" ) and created an IBAction in the ViewController.

Everything's fine, no build time errors, but when I tap on the Button nothing happens.

When I establish the TabBarController as initial view, it is displayed correct and fully functional.

I am out of ideas and help would be much appreciated.