Plot: Cyber Troopers Virtual-On MARZ is a 3D Mecha action-adventure game developed by Hitmaker and published by Sega. The game was first released on the PlayStation 2 in North America and Japan, and is the fourth game in the Virtual On franchise. Wikipedia
Plot: Cyber Troopers Virtual-On Force is a 3D mecha fighting game developed by Sega AM3 and published by Sega. It was released in Japanese arcades only on the Sega Hikaru arcade system board in 2001. Wikipedia
Plot: Cyber Troopers Virtual-On Oratorio Tangram is a 1998 Japanese Sega Model 3 arcade game that was later ported to the Sega NAOMI arcades and the Dreamcast home console in Japan in 1999 and North America in 2000. Wikipedia