Got some time off to celebrate the holiday of your choice? Well, you really shouldn't spend any more of it in front of a flickering monitor, but hey, you've been working hard: it's time for some fun! Download one of these 10 games and have a blast sliding down snowy slopes, zapping the bad guys, racing the NASCAR circuit, or building a city or a whole civilisation. Many of the games star our favourite flightless waterfowl, Tux. Be warned, though; not all of these titles are suitable for the little ones.