In The Lego Movie 2, what is the name of the post-apocalyptic version of Bricksburg?

In The Lego Movie 2: The Second Part, the post-apocalyptic version of Bricksburg is called Apocalypseburg.

The city receives this name after the Duplo invasion that follows the first film. When the Duplo creatures arrive, an attempt at peaceful friendship quickly turns into a destructive battle, leaving Bricksburg badly damaged. Five years later, the survivors have reshaped the ruined city into a harsher, fortified settlement called Apocalypseburg.

The new name reflects the film’s visual and tonal shift. The bright, orderly city from the original movie becomes a wasteland filled with improvised structures, defensive equipment, graffiti, and survivalist designs. Lucy and many of the other characters adopt a much darker outlook, while Emmet remains unusually optimistic.

Apocalypseburg is not the final name of the Lego world. After Finn and Bianca begin playing together again and the conflict between their perspectives is resolved, the rebuilt setting combines Apocalypseburg with the Systar System and is renamed Syspocalypstar. “Rubbletown,” “Destructonia,” and “Bricksville” are invented alternatives, not names used in the film.