In 1986, the world's worst nuclear disaster occurred at the Chernobyl power station. Soviet authorities established a 30km 'Exclusion Zone' around this nuclear wasteland, but in 2006 a second explosion rocked the stricken reactor, obliterating all living things and causing the Zone's boundaries to ripple outwards. From this epicenter came waves of mutated creatures, deadly radiation, and a strange, anomalous energy. The Zone was cordoned off by the military, who would shoot on sight anyone foolish enough to brave the horrors within.
This is a gamedata folder for S.T.A.L.K.E.R.: Shadow of Chernobyl. It only contains the "system.ltx" and "actor.ltx" files, which are editable. Note that you must modify the "fsgame.ltx" file, found in your STALKER directory, in order for any changes of these files to work in-game. Once you open the "fsgame.ltx", just change the "$game_data$ = false| true|" statement into this one: "$game_data$ = true| true|" (without the quotations). Cheers!