Smokin' Guns is like Quake 3 but in the wild, wild, west. It's a free download and runs on Windows, Mac, and Linux.
Download it here: http://www.smokin-guns.org/downloads
Server IP: multitap.pw
Many grueling hours of Smokin' Guns gameplay straight from the archives:
Directory of maps bsp --------------- br_alamo_2.bsp br_backwater.bsp br_cobber.bsp br_comanchecanyon.bsp br_coyotebluff.bsp br_dawnfort.bsp br_durango.bsp br_elpaso.bsp br_farm.bsp br_hangemhigh.bsp br_lago.bsp br_lake.bsp br_mexico.bsp br_newtown.bsp br_nonamecity.bsp br_santacruz.bsp br_train.bsp dm_alamo_2.bsp dm_backwater.bsp dm_canyon.bsp dm_coyotebluff.bsp dm_dawnfort.bsp dm_dry.bsp dm_fort.bsp dm_hangemhigh.bsp dm_lago.bsp dm_lake.bsp dm_mine.bsp dm_newtown.bsp dm_nonamecity.bsp dm_sancuchillo.bsp dm_steamboat.bsp dm_tillian.bsp dm_train.bsp du_highnoon.bsp du_showdown.bsp dm_station.bsp br_ghosttown.bsp dm_ghosttown.bsp