Our map pack is two years out of date.  It's probably not even worth installing.  Which map pack of ours do you have?

Adding custom maps should be the same with or without Steam though.  All *.ut3, *.upk, *.u and *.ini files for maps should go into here (no subdirectories- dump all files here):

&quot;[My Documents]/My Games/Unreal Tournament 3/UTGame/Published/CookedPC/CustomMaps/&quot;

If the path doesn't exist then create it.

The game install path is different with Steam but both use the &quot;My Games&quot; directory.  If you want to add custom maps into the game install path then put them here:

&quot;[Steam Install Path]/steamapps/common/unreal tournament 3/UTGame/Published/CookedPC/CustomMaps/&quot;

&quot;[Steam Install Path]&quot; is probably &quot;C:\Program Files\Steam&quot; or &quot;C:\Program Files (x86)\Steam&quot;.  There should be no reason for you to add custom maps into the game install path unless you have some special case.

If your goal is to watch a demo then our old map pack probably wont help.  Using a cache converter may help with that.  I have no idea how UT3's cache converter works so if it tries to put files in the game install dir then it may break with Steam installs.  Otherwise, you can just google the map name and put the map files into one of the directories above.  The map should show up in UT3's instant action map list.