Langrisser IV happened in 1997.
Langrisser IV was created on 1997-08-01.
Langrisser III happened in 1996.
Langrisser II happened in 1994.
Langrisser II was created in 1994.
Langrisser III was created on 1996-10-18.
Valis IV happened in 1992.
Caesar IV happened in 2006.
Soulcalibur IV happened in 360.
Suikoden IV happened in 2004.
P.T.O. IV happened in 2002.
Civilization IV happened in 2005.
Super Castlevania IV happened in 1991.