The game is a follow-up to the 2010 NieR game, and reunited the director, producer, and composer.
The number counts both physical shipments and digital sales.
Yosuke Saito (Dragon Quest X, NieR) was credited as producer, and Keiichi Okabe (Drakengard series, NieR, Yuki Yuna Is a Hero) composed the music.
Square Enix revealed during the Tokyo Game Show event on Thursday that its NieR: Automata game has sold and shipped a combined number of over 2 million copies worldwide.