"Sometimes calling something free might not make for the best
publicity. Such was the case with FreeCraft. This open source
project began with much promise--an engine that game developers or
hobbyists could use to create real-time strategy (RTS) games for
Linux, Windows, and other platforms. It also annoyed game developer
and publisher Blizzard Entertainment (renowned for its RTS
franchises Diablo, StarCraft, and WarCraft) for two reasons.
"First, FreeCraft allowed players to use the assets from their
copies of WarCraft 2 to run the game on the FreeCraft engine (and,
thus, on a Linux system). Second, its name highly resembled that of
StarCraft. The company sent a cease-and-desist letter to the people
behind FreeCraft and the project apparently shut down..."