BrokenMUGEN (sometimes referred to as BrokenMUGEN HR and BrokenMUGEN HD) was a series of unauthorized modifications to the WinMUGEN engine made by Vyx circa 2009. The modified engine, as well as its creator, were the center of a large controversy regarding both M.U.G.E.N community ethics and the M.U.G.E.N engine's copyright status. The project was discontinued after the creator received a Cease & Desist order from Elecbyte's legal firm.