Treasure Planet works well for learners who already understand English comfortably and want more challenging listening practice. At an average of around 85 words per minute, the dialogue is generally manageable, though some exchanges require more attention. Some scenes use denser language, so learners may need to pay close attention to word choice and phrasing. At an intermediate level, the main story should be easy enough to follow. For learners around B2/C1, this can be a practical choice for building vocabulary range.