The King of Fighters '98: Ultimate Match Online, briefly referred to as KOF'98 UM OL, is an officially authorized SNK Playmore mobile game by PlayHit Southeast Asia. It is a free-to-play, tactical RPG fighting mobile game based on The King of Fighters '98: Ultimate Match.
The game first launched in 2014 in China. It currently has regional servers in China, Taiwan, South Korea, Japan, Vietnam, Thailand, Indonesia, Malaysia, Singapore, Philippines and the United States.