stalker is not the same kind on RPG and the player action does not have a really big impact on the game, even Mass Effect (which I really really love) seems to be rather poor in term of implications and choice comparing to D:OS

"-Oh that's fullmoon, cuttie cuttie sheep
-baaaaaaOOOOORGH"
***Sprotch***

Weresheeps will rule the world (At least one night every 29 days)