Downloading a full ISO of a commercially released game like Guitar Hero II , even if it has been modified, exists in a legal gray area. The original game's code and engine are proprietary and copyrighted. Distributing or downloading modified copies of the game is not considered legal, even if you own the original disc. Custom song charts, however, are typically considered fan creations and exist in a different legal space. For a completely legal experience, you should support the developers by purchasing official games and DLC.
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