Contra: the War of the Worlds was released by Konami Shanghai in 2009 exclusively in China. It is official Contra game for J2ME. It has gameplay features from Contra III: the Alien Wars and its own gimmics, such as healthbar, low gravity zone, autoscrolling level and completely new plot and setting.

In 2641, Zergs from SX Star began an attack on Earth and built a military base on the moon. The government sent a single soldier to destroy the enemy.