Hi Guys,
I'm planning to do a somewhat Left 4 Dead like, but in a few things very different (more tactics e.g.) game. Before starting all the asset creation etc I'd like to find out, whether it will be (ir is already?) possible to do a own multiplayer game with the free SDK and if true, whether we will have to write the server files and so on our own?

Thanks in advance
Taxel

Please try searching , there's loads of these questions around. Yes it is , but you need someone who can write net code.