LEGO HARRY POTTER COLLECTION: YEAR 1 - 4 Gameplay Walkthrough Part 8 - Dragon Slayer
1Lego Harry Potter's gameplay is similar to that of most previous Lego video games, with an emphasis on collecting, exploring, and solving puzzles. Casting spells is an integral part of the gameplay, with a wide range of spells available for unlocking as the player progresses. As there are many spells available in the game, the player can use the spell wheel to select the spell. Potion-making is another integral feature; potions can help the player complete levels or, if created incorrectly, have adverse side effects such as turning the player into a frog.
Changes to the mechanics of previous games include 'Student in Peril' missions, which are a group of challenges to help a student, and Polyjuice Potion, which allows players to temporarily change one of the player's characters into any other mini-figure unlocked. A major change is to the hub system. Diagon Alley serves as a hub for purchasing unlockable extras, The Leaky Cauldron works as a hub for returning to previous levels, while Hogwarts acts as a constantly evolving massive hub with the unlockable characters found by picking up their hidden portraits.
The bigger areas in Hogwarts have led developer Traveller's Tales to improve the overall level design. Also included is another bonus level that allows players to customize the level similar to Lego Indiana Jones 2: The Adventure Continues. If the player is lost in-game, they can follow a trail of Ghost Studs to the next level. These do not count towards the stud total, but will guide the player to the next section of the level. However one of the collectible 'red bricks', found in the courtyard next to Herbology, gets the player an 'extra' that makes the ghost studs worth 1,000 each.