You can find here a full list of all legal video games that are free: http://en.wikipedia.org/wiki/List_of_freeware_video_games
Metin2 „Sharpen your blade and your mind!“ Metin2 invites numerous players into a fascinating Far Eastern world. Be it the fights on horseback or on foot, with a blade or bare hands, or the epic story that is jointly told by all players – a plot line develops even apart from the individual tasks and fights in the three empires of Metin2. A large meteorite has brought evil into the world and sown the seeds of discord. And it is now the task of all players to unite the empires and ban the stone from the world.Those preferring to give their blades a rest have numerous opportunities to meet with other players and even marry them. Like all games by Gameforge, Metin2 can also be played for free by all.
I think "Cricket" is best of all. You can view the game here. If you're satisfied, you can download it for your future use. Hope this helps you.
I've been playing Zork on my netbook lately. It's refreshingly fun. 80KB (YES, 80KB!!!) zip file here: http://www.infocom-if.org/downloads/downloads.html Get lamp.
my favourite racing game is need for speed most wanted black edition and you can download it from picktorrent....