 The Austrian brothers ' main influences were Golan Levin 's 1998 interactive Yellowtail and Wassily Kandinsky 's Point and Line to Plane book , from his time teaching at the Bauhaus . The sound design uses excerpts from Erin Gee 's " Yamaguchi Mouthpiece I " , and their game design influences include Thatgamecompany and Patrick Smith of Vectorpark and Windosill , though they felt that other games did not singularly influence Blek 's design . They were interested in video games as toys and " as meaningful experiences " . The game was written in the Unity game engine and tested by the developers ' friends . Since the core game mechanics were set , their feedback pertained to the level design . As their primary interests were in a " unification of art , craft , and technology " , the game had no public relations or marketing campaign and its creators expressed little interest in the app 's business and marketing , though they did share the game directly with media outlets . 
