[Thee_oddball]

Originally Posted by Heliocon

Well technically you do because steamworks is in the steam client I believe. So you will have to register or link the exe in steam in order to play MP (I think).

Also for the record steam only requires internet for registration aswell, after that you can use offline mode.

Most of the tools and functionality included in Steamworks is intended to support games by including ancillary functions like cheat detection and DRM. Obviously, those things won't help you build a great game in the first place -- Steamworks is not intended as a game creation platform. If you're a Mod team, be sure to check out the Valve Developer Community. This site includes information on how to get the Source SDK, and is full of valuable information contributed by Valve and by teams using the Source Engine.

Steamworks, it should be noted, is not part of the Steam publishing/distribution arrangement. Steamworks is a free toolkit for game developers; distribution on Steam is handled through a separate deal with Valve.

https://partner.steamgames.com/documentation/mod_team