Marvel's Avengers on PS4 is an original third‑person action‑adventure game based on the Marvel superhero team, developed by Crystal Dynamics and published by Square Enix. It released on September 4, 2020 for PlayStation 4 (alongside Xbox One, Stadia, and PC), with a free upgrade path later to PlayStation 5. The game combines a cinematic single‑player campaign centered on Kamala Khan reuniting the Avengers with a co‑op live‑service endgame where up to four players can team up online to run missions, level heroes, and unlock gear. Support and new content ended in 2023, and the Definitive Edition (including all expansions, heroes, and outfits) was permanently delisted from digital storefronts on September 30, 2023, though owners can still play solo and multiplayer with existing content.