Kill-Ballad Online

Kill-Ballad Online (キルバラード) is a first person arena fighter developed by PlatinumGames and Nitroplus, published by 5pb, Bandai Namco Entertainment and Sega, and distributed by Sony Computer Entertainment under the Playstation Mobile banner for iOS and Android. It's a version of the fictional mobile game in the 2012 visual novel, Robotics;Notes, and was made to celebrate the game's upcoming English release.

History
Kill-Ballad Online was a multiplayer mobile game first showed off in Robotics;Notes, and was based in a fictional mecha anime called Gunvarrel. The game was later revealed to celebrate the release of Robotics;Notes in North America. The game was developed by PlatinumGames, who are also responsible for Bayonetta and Anarchy Reigns. Hideki Kamiya, the director, was interested in the idea of the game after the release of NieR Automata, and expressed interest with working on the project. Eventually, 5pb and Nitroplus agreed to start the project.

Gameplay
Kill-Ballad plays like a combination between the games Anarchy Reigns, Vanquish and Mobile Suit Gundam Bounds of the Battlefield. It can be played from a 3rd or 1st person perspective. The game can be played against A.I Players or real players over Wi-Fi. Matches can be played with up to 128 players on a single server.

Release
Kill-Ballad was released for iOS and Android on their respective app stores for free. It was also pre-installed onto the PokeCOM Phablet, which was created by Sony to also hype the release of Robotics;Notes, and was sold in 128GB modules for $69.99.