ストリートファイターEX
is a Japanese video game developer and publisher. It was formed in 1995 by former Capcom employees, originally as ARMtech K.K, later named Arika. The name of the company is the reverse of the name of the company's founder, Akira Nishitani, who along with Akira Yasuda, created "Street Fighter II". Arika's first arcade game was "Street Fighter EX". It was successful and was followed up with two updates ("Street Fighter EX +" and "EX + α" for the PlayStation), and two sequels in arcades, on PlayStation and PlayStation 2. In 2018, they released a PlayStation 4 spiritual successor to both Street Fighter EX and the arcade only game "Fighting Layer" (published by Namco), called "Fighting EX Layer". From 2019 to 2021, Arika collaborated with Nintendo to create the battle royale games "Tetris 99", "Super Mario Bros. 35", and "Pac-Man 99".