HBO's Celtics City is steadily rising on Max's streaming chart while Celtics fans watch their games. According to the streaming service, the nine-part sports documentary series is garnering rave reviews from fans worldwide. Executive produced by Bill Simmons, American sports analyst and author, and Connor Schell, Celtics City tells the story of the Boston Celtics, the NBA's most storied franchise. It goes into depth about where it all began, from being one of the original teams in the league to its historic championships and rivalries that shaped its identity. Never-before-seen archives and over eight dozen interviews were conducted to complete what Rotten Tomatoes reviewers are calling "a well-produced history for those who fit its target audience."

While the series began streaming on Max on March 3, 2025, it already has a perfect Rotten Tomatoes score, with Alan French of Sunshine State Cineplex calling it a "fun ride with plenty of serious discussions.