The the_big_one_sc_v2.exe file you have requested: Maps Levels Missions / Sven Coop Maps / Sven Co-op The Big One 490 Maps Pack (v2) - 696.86mb is not available. Perhaps try browsing all files for the game Half-Life and upload any files you want to share or are missing. This is the only information we could locate:
The download is an .exe installer. This installer however only is used to extract the archive and to locate the correct svencoop directory on your PC, making the install progress so so simple. It will not leave any new software, other than the maps, A huge svencoop map pack containing 490 maps. This is version 2 of the map pack, This is a repack excluding the annoying weapon models that v1 had. Its a bug fix release.