The ABC Locker ransomware virus is not exactly a gaming related malware, but it does encrypt save games for the video game DayZ (a modification of an Arma game).
That could be a serious concern for people who have spent serious hours into the game and don't have backups or a cloud synchronization enabled for saves to be duplicated.

What is more, this ransomware also target a bit more than 240 different file extensions.
It asks for 250~275 euros or US dollars initially, but you shouldn't pay the ransom.
Find out more information in the article given below:

ABC Locker ransomware virus - Restore Your Data