S.T.A.L.K.E.R. developer GSC has spoken about the freeform foundation the game's been built on in an interview with CVG.
Oleg Yavorsksy, senior PR manager at GSC, has explained that the developer has created the game with "big freedom in mind", with a view to giving the player free rein in deciding precisely how they want to experience what's placed before them.
"Gameplay", said Yavorsksy, is "structured in accordance with the way the player constructs it - be it secretive, stealthy operations full of ambushing or lightning-fast assaults." He continued, "Some players may opt for exploration and trading, while others will become a warrior."