Quote Source SDK 2013

Estranged was running on the Source SDK 2007, which was beginning to cause us some unexpected issues in some areas. I have spent the last week branching and merging the codebase into the 2013 SDK, and am pleased to report that Estranged 2013 is now in a stable condition.



While this brings us benefits like Linux and Mac support, it also brings with it subtle performance and feature improvements - such as the Steam HTTP API (to replace cURL for our statistics collector) and the vgui::HTML WebKit control, which replaces Awesomium (we'll talk more about how we use that for in-game screens and other assets in future posts).

Article taken from GamingOnLinux.com.

The developers of the Half-Life 2 Mod " Estranged " have noted they have upgraded it to the latest SDK to bring Linux support (and Mac).Speaking on their Desura blog they stated:They even showed it off running on Ubuntu!Estranged is a work in progress mod that tells the story of a lone fisherman whose ship is stranded on a mysterious island during a violent storm. Explore the rich environments and meet the curious inhabitants of the island as you find a way back to the mainland. Face both danger and intrigue in this perilous adventure, where you will soon find that not everything is as normal as it seems...