Source
Background
Source is a 3D game engine developed by Valve as the successor to their original GoldSrc engine, introduced in June 2004. Source does not have a concise version numbering scheme; instead, it is designed in constant incremental updates. It is named after Half-Life: Source, the first game by the corporation to utilize the engine.
(June 1, 2004-)
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Logo: After the Valve logo, we see the words "powered by" on top of "source" in white, with an orange symbol resembling a part of the Half-Life 2 logo surrounding the "e" and copyright notice below.
Variants: On console versions of Half-Life 2, the logo does not have a copyright notice.
Technique: None.
Audio: None.
Availability: Appeared on all games by Valve since Half-Life: Source.
Legacy: A well-remembered logo for fans of Half-Life and Portal.
