chocolate-doom : Doom source port that accurately reproduces the experience of Doom as it was played in the 1990s ( http://www.chocolate-doom.org/ )
crispy-doom : Limit-raising medium-resolution Doom source port based on Chocolate Doom. ( http://fabiangreffrath.github.io/crispy-doom )
doom64ex : Recreation of Doom64 with additional modding features ( http://doom64ex.wordpress.com/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a zerodaysfordays
For Paludis use this rsync : rsync://gentoo.zugaina.org/zerodaysfordays-portage
If you have a problem : ycarus(-at-)zugaina.org