What is the name of the Lego game that adapts the first four Harry Potter films?

The Lego game that adapts the first four Harry Potter films is Lego Harry Potter: Years 1–4.

Developed by Traveller's Tales and published by Warner Bros. Interactive Entertainment, the game follows Harry's early years at Hogwarts. Its story draws from Harry Potter and the Philosopher's Stone, Chamber of Secrets, Prisoner of Azkaban, and Goblet of Fire, released as films in 2001, 2002, 2004, and 2005 respectively.

The game was released in June 2010 for Windows, PlayStation 3, Wii, Xbox 360, Nintendo DS, and PlayStation Portable. It translates the films' major events into Lego-style action, puzzle solving, spell casting, and cooperative play, while adding the series' trademark humor and collectible hunting.

A frequent mix-up is Lego Harry Potter: Years 5–7, the sequel covering the remaining story. The Lego Harry Potter Collection is not a separate adaptation of the first four films; it is a compilation that bundles Years 1–4 with Years 5–7. “Lego HP: The Sorcerer's Stone” is also not the game's official title.