From Japanese Wikipedia:
On January 25, 2014, Namco Bandai Games announced that the company would be known as Bandai Namco Games worldwide. The change is intended to unify the brand internationally (since the company was already known as Bandai Namco in Japan) in order to increase the "value" and "appeal" of the name. Bandai Namco Games is a game developper and publisher. They are based on the old Namco company, and were formed when Bandais game division merged with them.
NBG is a daughter company to Namco Bandai Holdings and one of the key companies in the Bandai Namco Group.
The reason the names were flip-flopped for the English title was because they regarded the name "Namco" as being more famous than "Bandai" in the West, whereas in Japan it's the other way around.
- Bandai fan
- Namco fan
Bandai Namco Games changed their name to Bandai Namco Entertainment on April 1, 2015.