zzMosaic Screensaver allows you to set multiple pictures as your screensaver and the app will automatically change between them.
The image change happens as a sweep from top to bottom and side to side or pixelation. You can set the interval (in seconds) for the changes as well as how the image will fit the screen.
Because some people have asked about the author both here and on other websites, Javier is a regular visitor and indie developer who creates screensavers and small apps and makes them available to you on MajorGeeks. You may not have heard of Javier before, but MajorGeeks has always supported the smallest of developers since 2001. As always, all files on MajorGeeks are scanned, tested, and reviewed.