Try downloading steam and then download it off the steam website.
PC and Xbox360 I recommend PC though, because it uses Steam.
You can buy it on Steam.
On Steam. Download it from www.store.steampowered.com and when it's downloaded search for Left 4 Dead.
Of course you can. Go to your local walmart, ebgames, bestbuy, futureshop. Any PC gaming store will have it. And if not you can order a disc version off the steam store.
yes you have to have steam.
You get it from Steam.
Steam.
Steam has it.
Yes, you can for the PC version with the help of Steam. Steam is pretty much a PC gaming store online.
I believe so but it'll downgrade to the lowest one.
You can get it to PC.