Simplify the following text for a Grade 7 native English-speaking person.
Original: The Sims Medieval is a video game in The Sims series based upon The Sims 3 Engine , developed and published by Electronic Arts for Microsoft Windows and Mac OS X and was released on March 22 , 2011 .
Simplified: The Sims Medieval is a video game developed by The Sims Studio . It is based on The Sims game series , and was released on March 22 , 2011 by Electronic Arts .