Main series:
Final Fantasy (12/18/1987)
Final Fantasy II (12/17/1988)
Final Fantasy III (4/27/1990)
Final Fantasy IV (7/19/1991)
Final Fantasy V (12/6/1992)
Final Fantasy VI (4/2/1994)
Final Fantasy VII (1/31/1997)
Final Fantasy VIII (2/11/1999)
Final Fantasy IX (7/7/2000)
Final Fantasy X (7/19/2001)
Final Fantasy XI (5/16/2002)
Final Fantasy XII (3/16/2006)
Final Fantasy XIII (12/17/2009)
Final Fantasy XIV (9/30/2010)

Sequel games:
Final Fantasy IV: The After Years (2/18/2008)
Final Fantasy X-2 (3/13/2003)
Final Fantasy XII: Revenant Wings (4/26/2007)
Final Fantasy XIII-2​ (2011)

Other games:
Dissidia: Final Fantasy (12/18/2008)
Ehrgeiz (12/17/1998)
Final Fantasy Adventure (6/8/1991)
Final Fantasy Mystic Quest (10/5/1992)
Final Fantasy: The 4 Heroes of Light (10/29/2009)
Fortress (2008)
Final Fantasy Legends: Hikari to Yami no Senshi (9/6/2010)
Dissidia 012 Final Fantasy (3/3/2011)
Final Fantasy Type-0 (2011)
Final Fantasy Crystal Chronicles: The Crystal Bearers (11/12/2009)
Final Fantasy Crystal Chronicles: My Life as a Darklord (6/30/2009)
Final Fantasy Crystal Chronicles: My Life as a King (3/25/2008)

Final Fantasy VII games:
Before Crisis: Final Fantasy VII (9/24/2004)
Dirge of Cerberus: Final Fantasy VII (1/26/2006)
Crisis Core: Final Fantasy VII (9/13/2007)