LEGO Harry Potter: Years 1-4 Experience your favorite Harry Potter moments through the proven prism of the LEGO video game franchise. Explore iconic settings including Hogwarts castle, Diagon Alley, the Forbidden Forest and the village of Hogsmeade. LEGO Hogwarts castle is a grand, immersive 3-D environment and the largest, most detailed LEGO game location ever built. Play as Harry Potter, Ron Weasley, Hermione Granger as well as other favorite characters with over 100 possible options. Attend lessons, cast spells, mix potions, fly on broomsticks, and complete tasks to earn points.