I think the concept for left4dead started with the counter-strike (source) zombie mods. When was portal ever a mod?
Red Orchestra started as mod for the unreal engine. the modders won a unreal modding contest and won the rights to use the engine without a licensing fee.
Also, Natural Selection 2 originated from a mod from the original half-life.
__________________
i5 2500K @ 4.0 GHz
2 x 4GB G.Skill Ripjaws X
Patriot Pyro 240GB
Gigabyte HD 6970 OC
Gigabyte Z68X-UDH3-B3
Seasonic 760W
Coolermaster Hyper 212+
CM690 w/ 1-80mm, 6-120mm fans.
|