Abzû is an adventure video game developed by Giant Squid Studios and published by 505 Games for PlayStation 4, Xbox One, Nintendo Switch, Microsoft Windows and Amazon Luna. Initially released as a digital title in August 2016, a retail version for consoles was released in January 2017. Following the journey of a diver exploring the ocean and restoring life using sonar calls, the gameplay allows the player to freely navigate underwater environments ranging from open water and natural caverns to ancient ruins. Development lasted three years, involving a team of thirteen people. Several members, including director Matt Nava and composer Austin Wintory, had previously worked on the 2012 video game Journey—the ocean setting of Abzû was both a reaction to the desert setting of Journey and inspired by Nava’s love of scuba diving. The setting and story drew from Sumerian mythology and the cosmic ocean myth. Reaching high positions in sales charts, Abzû was praised by journalists: the majority of praise went to its art style, with some critics comparing it to Journey.