 The idea of Ring Outs in 3D fighting games was originally conceived by the "Virtua Fighter" series of fighting games and adopted by Namco for "Soul Edge".A combatant cannot be knocked out of the ring without being eliminated by some effort from themselves or by their opponent.Later games introduced new ring designs that modified the way Ring Outs were handled ("Soulcalibur" allowed rings to take different shapes instead of a basic square, "Soulcalibur II" introduced stages with walls that blocked off parts of the ring and made Ring Outs possible only in certain parts of the stage or removing that condition altogether, and "Soulcalibur III" introduced low walls that can be destroyed to create a Ring Out opportunity).