Final Fantasy I - 6 times
Final Fantasy II - 1 time
Final Fantasy III - 1 time
Final Fantasy IV - 4 times
Final Fantasy V - 2 times
Final Fantasy VI - 3 times
Final Fantasy VII - 9 times
Final Fantasy VIII - 6 times
Final Fantasy IX - 3 times
Final Fantasy X - 3 times
Final Fantasy XI - 1 time
Final Fantasy XII - 2 times
Final Fantasy XIII - 2 times

Final Fantasy tactics - two times (including War of the Lions)
Final Fantasy X-2 - Over 10 times (it's a new game plus mode)
Final Fantasy XIII-2 - 4 times I have got everything in the game.
Final Fantasy - Type-0 - Again about 8 times (New game plus mode)
Final Fantasy VII Crisis Core - About 6 times
Final Fantasy Dirge of Cerberus - 2 times
Final Fantasy XIII-3 Lightning Returns - 5 times