Why does the steam versiion not support 64 bit widows?

[Nike-it]

Originally Posted by PenGun

What drivers would those be?

Valve seems to think the game does not work well enough in 64 bit for them to support it.

I notice also that my GTX 260 is on a list of unsupported cards. It's a long list including many popular cards.

What is going on here?

GTX 260 is pretty good for Cryostasis, have no idea why it is not included in the list.