Alice Gear Aegis (Japanese: アリス・ギア・アイギス, Hepburn: Arisu Gia Aigisu) is a Japanese mobile game developed by Pyramid and published by Colopl; it was originally released in January 2018. The game received an original video animation adaptation by Nomad in September 2021. A console variant of the mobile game, titled Alice Gear Aegis CS: Concerto of Simulatrix, by Mages was released for the Nintendo Switch, PlayStation 4, and PlayStation 5 in September 2022 in Japan, followed by a worldwide release in March 2023. An anime television series adaptation, also by Nomad, aired from April to June 2023.