QuoteSource : https://en.wikipedia.org/wiki/Nuclear_Dawn
Nuclear Dawn is a post-apocalyptic first-person shooter real-time strategy hybrid video game (games in the same genre include Savage and Natural Selection). It was originally announced in February 2006 as an amateur mod for the Source engine, but in April 2009 was revealed to have become a commercial project, still using Source, aimed at Windows PCs, Mac OS X and the Xbox 360. It was released on September 26, 2011.
It is a fantastic game, and on their steam discussion page they posted
QuoteAs you can see 6.9 will be sort of a optimization patch where over the coming weeks we will look at what will be requested most, what can be changed and what can be added to the game if needed. After this we will move onto 7.x which will bring Linux client support to Nuclear Dawn.