Well this is all a bit sad and stupid; certain Dying Light modders have reported that their hosted files are being pulled down due to DMCA (Digital Millennium Copyright Act) claims. The claims come from the Entertainment Software Association, of which Dying Light publisher Warner Bros is a member.
Useful and non-intrusive mods like film grain removal were hit with DMCA claims over the past couple of days, and, to make matters more awkward for mod enthusiasts, the most recent Dying Light patch (1.2.1) made it harder to override aspects of the game like weapon data and zombie stats. While it’s obviously desirable to prevent people cheating in the ‘Be A Zombie’ mode, this is a rather brute-force way of trying to achieve that goal.
The good news is, none of this seems to have actually put a stop to people modding the game. For those who still want to disable things like film grain or depth of field effects (or even strip out atmospheric effects like sun shadows in an effort to boost frame-rates,) there’s a useful tool made by the user ‘Leaves.OwnZ’ available from the Steam discussion forums.
All external tools are to be used at your own risk, of course.