Complex sentence: Legacy is an American web series anthology adaptation of the fictional universe of the "Mortal Kombat" video game franchise that debuted on Machinima.com's YouTube channel on April 11,2011.
Split into simpler sentences: Legacy is an American web series anthology adapted from the fictional universe of the "Mortal Kombat" video game franchise. It debuted on Machinima.com's YouTube channel on April 11,2011.