The painting system featured in the film is based on a concept first described in an aesthetics paper written by director/writer Kyle Broom, who has a PhD in philosophy.
There is a small robot figurine hidden in the background of many scenes, which was added by Assistant Director Daniel Estrada, a philosophy professor specializing in artificial intelligence.
At the beginning of the movie when Sara is playing games at the arcade/boardwalk, a Zoltar machine can be briefly seen. This is the same machine that was a major plot element in the Tom Hanks classic, Big.