Parallax scrolling is one of biggest trend in 2013. It’s special scrolling technique that can be interpreted in many ways. Basically it’s showing depth in 2d, and making some of elements looks like they are animated.
Parallax scroll has become mainstream, Ian Coyle created the very first parallax website for Nike “Nike Better World” on 2011, nowadays it is overused as a trendy effect but it is a great tool if it serves the user experience and is perfect for storytelling websites.
Parallax scrolling is a special scrolling technique in computer graphics, wherein background images move by the camera slower than foreground images, creating an illusion of depth in a 2D video game and adding to the immersion. The technique grew out of the multiplane camera technique used in traditional animation since the 1940s, and was popularized in the 1982 arcade gameMoon Patrol.
Here is a list of premium Parallax Scrolling WordPress Themes.