Steam just released an update which included Half-Life 2: Deathmatch, Half-Life 2/Source SDK, and various tweaks and fixes. Until tonight I did not think there would be any multiplayer to Half-Life 2 other than Counter-Strike: Source. Well Valve has made a very good decision doing this and should spark more interest in the game than there already is. With this release I’m sure we will see many new maps added, different mods, and lots of excitement.
The screenshots below are from the map DM_Lockdown, the second page has screens from the map DM_Overwatch. This article was written only a few hours after the release of the Half-Life 2: Deathmatch so there are very few servers which is the reason for the extremely high ping in one of the screenshots. As soon as some high end dedicated servers start popping up this should not be seen.