Well, the use of magic and the supernatural is a big draw in young adult fantasy novels. In 'Twilight', the idea of vampires and werewolves adds an element of allure. The relationships in these novels also matter. In 'City of Bones', the complex relationships between the characters, including romantic and friendship ones, keep the readers hooked. And the pacing is crucial too. A fast - paced novel like 'Red Queen' keeps the readers on the edge of their seats.
Engaging young adult fantasy novels often have exciting plots. For example, in 'Percy Jackson and the Olympians', Percy's quests are full of action, danger, and mystery. Also, themes that resonate with young adults are important. In 'The Fault in Our Stars', although not strictly fantasy, the themes of love and mortality are deeply moving. In a fantasy context, themes like self - discovery in 'A Wrinkle in Time' can be very engaging.
The characters make a young adult fantasy novel engaging. When readers can relate to or be fascinated by the main characters, like Katniss in 'The Hunger Games' who is strong and determined. Another factor is the world - building. A vividly created magical world, such as the wizarding world in 'Harry Potter', draws readers in.