Board Thread:Theories and Rumors/@comment-34210408-20180128141738/@comment-29670051-20180216155405

Chimadino wrote: Lego Dimensions is just another Lego theme. When it's non-canon then Chima, Nexo Knights or any other Lego themes also non-canon to Ninjago. Dimensions isn't canon to the show. This was confirmed long ago.

Chima is the only theme we know exists in the Ninjago universe. We can't even be sure about Nexo Knights as Chima seems to be just a fictional battle simulation world there.