Power Stone is a fully 3D arena fighting game series made by Capcom. Power Stone was initially released on the Sega NAOMI hardware () and later ported to the Dreamcast. In February 2006 Capcom ported the entire series to the PSP with a few enhancements: most notably, the PSP version of the original Power Stone included the four new characters introduced in Power Stone 2. An anime show based on it was run in the late 1990's.

The original Power Stone featured 10 characters.

Source: Wikipedia