Valve rilascia attraverso Steam
il Deatmatch e l’ SDK di Half Life 2.

Included in this update:

Half-Life 2: Deathmatch

New multiplayer game featuring physics simulation system
Half-Life 2/Source SDK
Includes game code needed to create Half-Life 2/Source MODs
Ability to edit Half-Life 2 maps
Maya model exporter
3d Studio Max model exporter source code
Sample MOD with vehicles

Source Updates

HTTP and non-HTTP map auto downloading functionality
Enhanced dedicated server logging capabilities
Various tweaks and fixes

*Also: A Half-Life 2: Deathmatch Map Making Contest has been announced.
The winning entry will receive a cash prize of $5,000. Two runner up entries
will receive a cash prize of $3,000.