Source получил свое название из названия репозитория с исходниками. Когда делали HL2 репозиторий с исходниками движка HL1 назывался GoldSrc (GoldSource), а репозиторий с исходниками HL2 назывался Src (Source)

> Prior to the creation of the Source engine, the GoldSrc engine had no real title and was simply called "The Half-Life engine". Once Source was created, Valve forked the code from the Half-Life engine to make the Source engine. This created two main engine branches, each used for different purposes. One was titled "GoldSrc", and the other "Src". Internally, any games using the first variant were referred to as "Goldsource" in order to differentiate the two branches. Eventually, it became something of a moniker for the engine and was adopted as the official title externally.

Да норм, будет как и с остальными играми беседки - через полгода-год навыходит модов на графон, которые делают картинку неебически красивой и при этом требуют чуть ли не 2 titan x в sli.