Hi xiko. Welcome to the forums!
You can usually find sellers on eBay.co.uk and amazon.co.uk who are selling Pathologic and will ship worldwide. However, I checked just now and there are *no copies* on-sale at the moment! Keep checking, though...
There is a Pathologic demo available. Download here. It will give you a good idea of the look and feel of the game, but don't expect the story to make much sense, as it kinda just drops you into it. The full game gives you a proper introduction.
As for Tension/The Void, wait for the English release in a few months' time, and import it.
