Metamod:Source 1.9.0 Release Notes
New Engine Support
Support has been added for using Metamod:Source on Counter-Strike: Global Offensive. This game uses a variation of the Source engine present in Alien Swarm and moreso Portal 2.
SDK Changes
AlliedModders has reverse engineered a CS:GO SDK capable of building plugins. This attempt is preliminary and more fixes may come as we explore the engine. You can grab a copy from our Mercurial forest (see the bottom of the page). If you discover any changes yourself, we greatly appreciate bug reports or any attempts at notifying us.
New API Changes
Metamod:Source now treats Counter-Strike: Source as a separate "CSS" engine, since compatibility diverges from "Orangebox Valve" at times. GetSourceEngineBuild now returns a new SOURCE_ENGINE_CSS value for this game. Similarly, users of the "extended loading" API will see this value in MetamodVersionInfo.