The LEGO City Seasonal theme (Advent Calendars) are annual LEGO sets released offering a countdown to Christmas. Each set includes 24 small builds, one to be opened and assembled each day from December 1st to December 24th. The calendars typically feature minifigures, tiny vehicles, and festive-themed items, providing a daily LEGO surprise in the lead-up to Christmas.
2017 LEGO Sets
Two films anchored 2017: The LEGO Batman Movie and The LEGO Ninjago Movie, each with extensive waves and a dedicated CMF series. BrickHeadz moved from limited releases to a full collectible line, and LEGO Boost introduced approachable coding and robotics. Several short-lived lines from prior years, including the BIONICLE reboot and Mixels, were no longer active.