immi101: though i guess they'll bundle the library once they start to make the games compatible to newer Ubuntu versions.
shmerl: Since it's missing in many distros already, they should have bundled it to begin with.
is it?
it is still being available in gentoo, arch, fedora, opensuse (and as said before the current ubuntu LTS) afaik.
It's unfortunate that debian only finally got around to updating from 1.2 to 1.6 after 5 years and immediately dropped 1.2.
and that happend just shortly after the Ubuntu 16.04 LTS release iirc
but that's life in linux land ;)
btw. libpng 1.2 still receives security updates (the last one december 2016), you could make the argument that relying on a distro package is better than bundling the library.
but anyway, since GOG tracks Ubuntu which tracks debian they probably won't get around bundling the library at some point. I just meant to say you can hardly throw any blame at GOG or Frozenbytes for being "out of date" at this point.
Distributing proprietary, binary packages on Linux simply sucks. Has always and probably will continue to do so.
embrace the pain ... :)