Lego Worlds is a Lego-themed sandbox game developed by Traveller's Tales and published by Warner Bros. Interactive Entertainment.

Players can create their own world by using predefined Lego structures or using the "brick-by-brick editor tool".

[4] Prior to the game's official release, it was teased in the back of a Lego set's construction manual.

[5] It was formally announced on 1 June 2015 with a simultaneous early access release on Steam to allow the gaming community to provide feedback for continual improvements and the integration of additional content over time.

[8] In March 2023 it was reported by Nintendo Life that a mobile version codenamed Project Lego X was in development by Playdemic and later moved to TT Games after they were bought by Electronic Arts (EA).