Hi, here is an ebuild for the co-operative mod for Rune, courtesy of Icculus. I'm unable to test it myself, but it has been tested as a client on x86: http://forums.gentoo.org/viewtopic-t-448708.html I suggest category "games-action", to fit in with Rune.
Created attachment 84106 [details] rune-coop-1.2.ebuild