The PC modding community has recreated WWE ’13’s roster and arenas inside WWE 2K19 or WWE 2K15.
You cannot download a "free" copy legally. To stay within the law: wwe 2013 pc
While the main simulation game was delayed, there was a WWE game actually released on PC in 2013: WWE Arcade. The PC modding community has recreated WWE ’13
A common point of confusion for retrospective researchers is the existence of WWE '13. wwe 2013 pc