Metal Slug Zero Online

a massively multiplayer online game, part of the Metal Slug series. It was being developed by Dragonfly, Wiz Hands, and SNK Playmore for the South Korean market.[2] There was no word on a Japanese or North American release. The game was on course for a 2009 release, however in summer of 2009, developer Dragonfly suspended development of the game due to their belief that the achievement of Metal Slug Zero Online being developed by Wiz Hands is far below their expectation, and the game could not conform to the trend of current gaming industry. The online game ended 24 March 2013

Synopsys

Genocide of Human being

When his son is dead, an angry Morden loses his reasoning power and orders army marching song to destroy the whole world with all soldiers under his control.

However, his ambition is destroyed by Marco and Tama of Phelgreen Felcons and Erry and Pio of Sparrows and
finally he was captured by them. He was imprisoned waiting for death punishment and he became completely crazy with sense of prostration and frustration, hatred and anger, and desire for revenge and after his successful outbreak from the prison, he plans another destruction was more miserable than before with more brutl charisma…

No, war has begun already.