Metal Gear Solid 2: Substance is an expanded version of Metal Gear Solid 2: Sons of Liberty (which was released for the PlayStation 2 in 2001). Substance was released for the XBox by Konami in 2002.
It’s the fourth Metal Gear game co-written and designed by Hideo Koijima and the seventh game in the series as a whole.
Never officially released in English-speaking territories (but translated by fans as “Psychic Killer Taromaru“) this side-scrolling action game is one of the rarest Sega Saturn titles in existence.
Rare because publisher Time Warner Interactive only produced a very limited number of copies of the game in 1997, before pulling out of the games market altogether. So actual copies of Shinrei Jusatsushi Tarōmaru have changed hands for silly money over the decades.
The King of Grabs 