The third chapter in Final Fantasy 13 has been finally made available on PC.
Lightning Returns: Final Fantasy 13 has been released on Steam. The PC version, which was delayed from a spring release, completes the Final Fantasy 13 trilogy.
Final Fantasy 13, and 13-2 remain available on PC, and have been for a while. The package does not include the Final Fantasy 7 Aerith schemata, though it does come with 14 ones.
If you buy it before December 17, you get it for 10 percent off, bringing the price down to $18/£11.69.