The full English version of the Catherine web site went live on 5/23/11. It includes wallpapers, avatar pictures, trailers, character bios, purchase information and an embedded cell phone texting game where you exchange daily texts with the titular Catherine.
Upon first visiting the site and providing age verification, the user is presented with a question: "Can love exist without pain?" Two answers are offered: "Of course!" and "No way, man." The former leads to the Katherine-centric site, and the latter to the Catherine-centric one. The presentation and question posed resembles the confessional booths at the end of each stage in the Nightmare gameplay.
Each of the menu spheres can be stretched and shot like a rubber band, and things like the cell phone icon are movable.