This happened in 1984
- The Castle theme is revamped, with consistent factions and numerous specialised parts introduced.
- LEGO Brazil is established.
- LEGO Korea is established.
- The first pneumatic TECHNIC elements are introduced.
- The 2x2 inverted corner slope is introduced.
Themes introduced or discontinued in 1984
- DUPLO Mosaic is introduced.
Sets introduced in 1984
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