Open source

rtcw-sp and rtcw-mp is opensource, sources can be obtained from HG-repository: http://hg.ioquake.org/

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This should be mentioned in the game description but the category open source should be only used for games with at last some creative commons licences for the game data. The reason why there is no fine grained differentiation is just the amount of work that is need for proper licence information like on opengameart.org