A brilliant example of graphic design that is specifically for screen. Very simple animations and 'games' if you like for you to interact with... that are VERY addictive!
There are loads to play with, but here are a few of my personal favourites...
These examples of design for digital media although engaging, don't seem to be communicating any message, they are simply there for the fun of it all! Rafael Rozendaal makes money by selling merchandise and taking donations from fans. And why not have design with no purpose apart from just having a good time?