The Epic Games Store has historically offered LEGO Builder's Journey as its "Free Game of the Week" (notably in December 2022). Keep an eye on the Epic Games Free Games page for future rotations.
While the game is usually a paid purchase, there are two common ways to play it without a direct cost: lego-builder-s-journey-free-download
If you already pay for Apple Arcade or certain tiers of Xbox Game Pass (when available), the game is included at no extra cost. ⚠️ A Note on "Free Download" Sites The Epic Games Store has historically offered LEGO