Why doesnt the 64 bit version play games like the 32 bit does?

[Mo0nwalker]

I tried opening Crisis Core and Birth By Sleep with 64 bit (as it obviously worked for 32 bit), but to my biig suprise it didnt work. In fact, anything I`ve tried on the 64 bit version stops manually on "pause" when i try to load the game file.

Is there something I need to know when it comes to the 64 bit which is different from how I handle the 32 bit?