Most numbered entries in a fighting game series

Mortal Kombat has gone through more numbered iterations than any other fighting game series. The 10th instalment, Mortal Kombat X, was released on 14 April 2015. Although Street Fighter has been running far longer than Mortal Kombat, and has more variations available to buy, it has only reached the fourth numbered game in the series. Street Fighter V is currently in development. Although not officially known as Mortal Kombat 9, the 2011 entry in the series is nonetheless known as Mortal Kombat 9 by many fans as well as many industry websites such as esportsearnings.com. Officially the X in Mortal Kombat X is pronounced like the letter rather than the roman numeral.