Team 4

Team 4 is the designation for a Blizzard Entertainment development team in charge of developing Overwatch, receiving its designation as per the company's post-World of Warcraft approach to games development. They are formerly responsible for the next-generation MMO known as Titan, but by the summer of 2013, development of Titan was winding down, leading to the project being cancelled in September, 2014.

Members of the team were transferred to work on World of Warcraft, Hearthstone, and StarCraft II. The core team that remained began work on Overwatch. As of November 2018, it consists of between 100–300 individuals.

• Titan (cancelled)
• Overwatch (2016)
• Overwatch 2 (2022)