Mortal Kombat 11 was developed by NetherRealm Studios and published by Warner Bros. Interactive Entertainment, the two parties also involved with the game's predecessor, Mortal Kombat X. The game was announced by series co-creator Ed Boon in December 2018, at The Game Awards 2018, with a trailer showcasing Dark Raiden and Scorpion fighting against each other. At the end of the announcement trailer it was announced that pre-order buyers would have Shao Kahn available as a playable character. The trailer featured "Immortal", an original song by artist 21 Savage, which was met with negative reception from fans of the series. While some critics thought that 21 Savage's distinct musical style well underlined the trailer's violence, most felt that the song's tone did not fit the trailer's theme, spawning a series of videos replacing it. After the trailer was revealed, voice actor Patrick Seitz announced that in seeing it he realized he had not been cast to return to voice Scorpion in Mortal Kombat 11, a role that he had played since Mortal Kombat vs. DC Universe from 2008. Later the following month, Vic Chao, who had voiced Kenshi, Triborg and Goro in Mortal Kombat X revealed that a majority of the cast from the previous Mortal Kombat installments would not return in Mortal Kombat 11, himself included. Earlier, in December, Karen Strassman, who voiced both Kitana and Mileena in the previous two installments, had also revealed that she would not reprise her role as Kitana and Mileena, citing politics in gaming that affect casting. On March 22, 2019, about a month before the game's release, it was announced at C2E2 that actor Cary-Hiroyuki Tagawa would reprise his role as Shang Tsung from the 1995 film and the second season of Mortal Kombat: Legacy, while coinciding the announcement of the character as downloadable content. A public stress test of the game's online mode took place between March 15 and 17. Also, a closed beta was available between March 27 and April 1, 2019, for PlayStation 4 and Xbox One pre-order buyers.