the doom3 / uac database - custom content, tweaks, console variables, cvars, help, support, level editing - everything
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These websites are related to doom3world.org in terms of content, traffic and structure
moddb.com
thedarkmod.com
iddevnet.com
d3files.com
fileplanet.com
doom3portal.com
unlimitedgamer.net
doomworld.com