First ROM hack send C&D letter
Square-Enix forbids all rom hacks, tools, and even documentation
http://www.chronocompendium.com/
A highly anticipated Chrono Trigger ROM hack, Chrono Trigger: Crimson Echoes, has just been nailed by a C&D by Square-Enix within days of its release, the first Cease and Desist letter of its kind. Additionally, Square Enix extended their cease and desist to any and all rom/modifications of any of their games, a rom hacking tool (that does not contain any copyrighted material), and forbids not only ripping or hacking anything from a Square-Enix game, but even teaching others how to do it (i.e., documentation).
Source
Square-Enix forbids all rom hacks, tools, and even documentation
http://www.chronocompendium.com/
A highly anticipated Chrono Trigger ROM hack, Chrono Trigger: Crimson Echoes, has just been nailed by a C&D by Square-Enix within days of its release, the first Cease and Desist letter of its kind. Additionally, Square Enix extended their cease and desist to any and all rom/modifications of any of their games, a rom hacking tool (that does not contain any copyrighted material), and forbids not only ripping or hacking anything from a Square-Enix game, but even teaching others how to do it (i.e., documentation).
Source
Contributed by masamunecyrus