The purpose is to find a character called Wally/Waldo among the group, which can be difficult as he is always well hidden. Although everyone finds him eventually Hitler cannot find him no matter how hard he tries and this makes Hitler mad and he starts ranting.
Created by Hitler Rants Parodies
Clips from Downfall (Der Untergang)
Hitler Rants Parodies Facebook Group
Hitler Rants Parodies Facebook Page
Downfall Parodies Facebook Page
Hitler Rants Parodies Wiki