http://theygotodie.com/wp-json/oembed/1.0/embed?url=http://theygotodie.com/about-the-film-2/performers-in-the-film/a-call-to-artists-submit-your-work/ Only a couple of hours to work on it, and I’m still moving pretty slow. But here’s a demo where the collectible objects are removed when a triangle is drawn around them.
A small suggestion. Increase the “timeout” on the triangle disappearing (and consequently replacing the blocks).
Or perhaps a “highlight” of the area that the triangle covered?