Square's first release for the PlayStation. A fun, if primitive looking fighter. If you appreciate the aesthetics of untextured polygons, it's a fairly engrossing game, with a unique game engine and a Quest mode that plays like a simplified, fighterish roguelike game.
It's getting harder to find, but you might try gametz.com (eBay is being ruined by Power Sellers). I, personally, found it at a pawn shop.
Incidentally, Tobal 2 was never released in the States.