Recently I found myself as Need for Speed World can be downloaded free. 
You download, install and play it. Obviously, online. 
But it's a big deal to let the game to be downloaded for free.

Although I have not much time had played some games and not much time, Need for Speed World I installed it myself and I played a bit. The curioiztate and relaxation.

So if you get bored at home and want to try it only needs to enter the addresshttp://world.needforspeed.com/download and download it. FREE. 
All you have to do is an account with them. What should take no longer than one minute.