Ninja fans aged 7 and up can recreate action scenes from the 3rd season of the TV series NINJAGO Rise of the Dragons with LEGO NINJAGO Arin's Spinjitzumech (71839). This set for children includes a NINJAGO mech with arms and legs that can be posed in different ways. And the mech can turn its upper body. You can also open up the chest to put a minifigure and 2 large swords in the Cockpit.

Children can create their own ultimate mech by swapping body parts from Arin's Spinjitzumech for parts of the customisable mechs from the separately available 2024 NINJAGO sets: Cole's Earth Mech (71806), Sora's Engineering Mech (71807), Kai's Fire Mech (71808) and Lloyd's Elemental Force Mech (71817).

The ninja playset includes 2 minifigures for role-playing games: Arin with a crystal katana and a spirit dragon fighter with a sword, as well as the Baby Riyu model, so that children can role-play exciting duels between good and evil.