I saw this on my intarweb travels, some of you probably know about this. Or perhaps maybe this is old news, but this is cool.
The game can randomly connect to three other people, and you all have to work together and do puzzles with your mouse, or you lose.
Or you can even make your own team if you like.
Link: http://team.forsvarsmakten.se/english/
It's kind of cool, enjoy!