alienarena : Fast-paced multiplayer deathmatch game ( http://red.planetarena.org/ )
sauerbraten : Cube 2: Sauerbraten is an open source game engine (Cube 2) with freeware game data (Sauerbraten) ( http://sauerbraten.org/ )
urbanterror : Hollywood tactical shooter based on the ioquake3 engine ( http://www.urbanterror.net )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a vayerx
For Paludis use this rsync : rsync://gentoo.zugaina.org/vayerx-portage
If you have a problem : ycarus(-at-)zugaina.org