First on Xbox 360 - will appear on PS3 and PC later in June.
Warner Bros. Interactive Entertainment and TT Games have announced that a playable demo of LEGO Harry Potter: Years 1-4 will be available to download on Xbox 360 from June 7. The demo will be released later in the month for PS3 and PC.
The demo will give Harry Potter and LEGO fans a chance to explore the Forbidden Forest and learn how to cast spells.
The full game will see players taking control of Harry Potter, Ron Weasley and Hermione Granger, as well as 167 other favourite characters.
LEGO Harry Potter: Years 1-4 is scheduled for release on June 25 for Xbox 360, PS3, Wii, PC, DS and PSP.