One of the last effects I made for Spark AR. Based on the Downtown no Gaki no Tsukai ya Arahende!!. The premise of the show is to not laugh, if you do you get punished.
The effect is based on cartoon illustrations of the main cast and sampled audio from the show. It uses the UI feature to allow the user switch their character to one of the 5 cast.
As the key feature it makes use of the face tracking to react to the user opening their mouth, and when they do it changes the facial features to a laughing place and plays iconic audio from the series for that character. The eyes would also blink as the user blinked.
The face meshes were made using Blender and Affinity Designer.
Some stats: