Metadata games are free online games in which you type tags about specific pictures or videos. In some, the aim is to match them with random people playing the same game, whilst others seek to find completely different tags on an individual basis.
An example of one game is Pyramid tag where you must describe an aspect about the object shown, starting with a 4 letter word and continuing to add one letter to the descriptions until you reach a 10 letter word. In another game called Stupid Robot, you must attempt to find the most uncommon words for each level in order to educate the robot, who will reject words it already knows.
The games gives you a chance to show your creativity in descriptions as well as helping to develop the word recognition ability of computer programs. The images, videos and audios are then able to be more easily categorised in libraries, museums and archives, making it easier for scholars to locate them.
Metadata games work closely with British Library, Boston Public Library, The Open Parks Network, Digital Public Library of America, and the American Antiquarian Society, to name a few.