Marvel's Avengers is a 2020 action-adventure video game developed by Crystal Dynamics and published by Square Enix Europe. Based on the Marvel Comics superhero team the Avengers, the game is mainly inspired by the Marvel Cinematic Universe's iteration of the group. Additionally, it incorporates elements from the team's comic book. The plot follows Inhuman teenager Kamala Khan, who gains superpowers during A-Day, a celebratory day for the Avengers, which ends in tragedy following a terrorist attack. Blamed for the disaster, the Avengers disband and allow science corporation A.I.M. to take their place. Five years later, when A.I.M. threatens to eliminate all Inhuman individuals, Kamala embarks on a quest to reassemble the Avengers to combat this new enemy. The game is played from a third-person perspective and has both single-player and multiplayer modes; it features an online co-op mode, allowing players to assemble a team of heroes of their own. The initial roster consisted of Tony Stark / Iron Man, Steve Rogers / Captain America, Bruce Banner / Hulk, Thor, Natasha Romanoff / Black Widow, and Kamala Khan / Ms. Marvel, with more characters being added in free post-launch updates, which also added story expansions and new regions to be explored. Each hero possesses a variety of costume customization features, as well as the capacity to upgrade their powers and abilities using a skill tree. Marvel's Avengers was released for PlayStation 4, Stadia, Windows, and Xbox One on 4 September 2020. The game received mixed reviews upon release, with critics praising its combat and story, but criticizing its repetition, lack of substantial content, user interface, and technical issues. It was released on the PlayStation 5 and Xbox Series X/S on 18 March 2021, with PlayStation 4 and Xbox One players able to upgrade for free. Gameplay Marvel's Avengers is a third-person, action-adventure game. It features an original story with single-player and co-operative gameplay. The game features a combat system chaining attacks, dodges, abilities, skills and elements during a combat phase. The game can be played offline through single-player or online with up to four people during certain aspects of the game. The game features customization options including abilities and costumes, which can be upgraded using a skill tree. Costumes have been sourced from "all corners of the Marvel universe" and can be earned in-game or bought separately as downloadable content. Players are able to receive free updates containing new regions and