On which platform was Lego Builder's Journey initially released?

Lego Builder's Journey was initially released through Apple Arcade.

Developed by Light Brick Studio and published by Lego Games, the puzzle game launched on December 19, 2019. It was available on Apple devices through Apple Arcade, including iPhone, iPad, Mac, and Apple TV. The game was one of the first two Lego titles released on Apple Arcade, alongside Lego Brawls.

The game focuses on arranging and connecting Lego pieces to solve environmental puzzles. Its quiet, story-driven presentation follows a parent and child through a miniature Lego world, giving it a more reflective tone than many action-focused Lego games.

A common mix-up is to answer “iOS,” because the game could be played on iPhones and iPads. However, the question asks for the release platform or service, making Apple Arcade the more specific canonical answer. Windows and Nintendo Switch versions arrived later, in 2021.