Lego Marvel's Avengers had the largest character roster of any LEGO game at the time with 250 playable characters.
The song that Hulk plays while flying away at the end of the Avengers: Age of Ultron portion is the "Walking Away Theme" that played during the series finale of The Incredible Hulk TV series.
As the follow-up from 2013's Lego Marvel Superheroes, this is the second game in the Lego Marvel series.
Hayley Atwell, Clark Gregg, Ashley Johnson and Cobie Smulders reprise their respective roles from the Marvel Cinematic Universe.