is the 2012 content-complete re-release of the 2011 fighting game (often called MK9).
Always run any downloaded .rar or .exe file through an updated antivirus program or an online scanner like VirusTotal before attempting to extract or execute it. Mortal.Kombat.Komplete.Edition.UPDATE.1.06.rar
If you are looking for an update to fix performance issues, errors, or crashes rather than adding content, consider trying standard PC troubleshooting steps instead of external files: is the 2012 content-complete re-release of the 2011