Ex Zeus

ExZeus (also known as Counter Force) is a video game developed by HyperDevbox Japan. It was released in 2003 in the arcades running on a Tsunami Visual Technologies TsuMo arcade cabinet. In 2004, a PlayStation 2 port was released, but only in Europe. Then in 2005, the game was released in the arcades once again, this time running on Sega NAOMI GD-ROM hardware, and only released in Japanese arcades. There was also a PC port of the game released as shareware. It was once again ported to the Wii under the working title of Shoot Out, later changed to Counter Force, and released in 2007. It was then reincarnated in 2009 for the iPhone, once again under the name ExZeus. An Android port was made available in 2010.

Story
Every day, thousands perish. Those who survive share rumors of an alien entity called 'Diadora'. The survivors took refuge below the Earth's surface, narrowly escaping the alien invaders. The governing Council ordered an immediate counterattack.

The primary objective codenamed 'Counter Force' would reclaim the Earth's surface using 3 experimental robots. The secondary objective is to investigate the alien war-machine's weaknesses and defeat the mysterious 'Diadora'.

Three freedom fighters - Sophia, Dynamis and Calista are humanity's last hope for victory!