Believe it or not, Ninjala has been available exclusively on the Nintendo Switch for almost a few years now. Since then, the free-to-play multiplayer action game has occasionally received additional content, including collaborations with other franchises.
Well, the latest example of this has been announced. The official Ninjala Twitter account announced that a collaboration with Attack on Titan will begin on March 15th, to celebrate the game surpassing 10,000,000 downloads. You can see their tweet about it below.