The simple fact that physical and online galleries have totally different modes of presentation is impossible to deny; often contained within a single, rectilinear room, "white cube" galleries, with their high-monied patrons and cordoned-off curations, often evoke ideas of art-world exclusivity. Online galleries, on the other hand, typically present artworks in a thumbnail grid, slideshow, or on an infinite scrolling page, but generally lack the substantiality and depth of their physical counterparts; flattened onto 2D screens, these are restrictions that the online viewer has grown to accept, and that many artists have learned to work within.

Manuel Palou and Moises Sanabria, the duo known as Art404 (aka Art Not Found), have seemingly bridged this gap, creating a link between physical galleries and their online counterparts. Gallery404 is a browser-based gallery space where the first-person "player" can explore a three-dimensional gallery filled with iconic artworks.