We've seen quite a few screensavers based on the hit Matrix films, and this one strikes us as strictly middle-of-the-road. True to its name, this program brings the movie's famous, rapidly moving green computer code to your desktop. In addition, Matrix Code Emulator Screensaver displays well-known quotes from the film, although you can disable this option if you like.
You also can customize several aspects of the code's appearance, such as movement speed, density, and highlight percentage. However, we think some users may find the installation process a bit confusing. Clicking the SCR file will only launch the screensaver; you must right-click it or copy it in the appropriate directory to install it. Though this isn't a huge problem, we really think the developer should include a help file explaining this process. Still, if you're a fan of the Matrix flicks, it won't hurt to try this free screensaver, especially since it doesn't come with adware.
Source : http://download.cnet.com