bsp, the most popular node builder for Doom, is now available in Fedora. Information on bsp's capabilities, as well as instructions, may be found at http://games.moria.org.uk/doom/bsp/.
The Fantastic League of Almighty Wizards is now available in Fedora. Refer to http://flaw.sourceforge.net/ for complete details.
hedgewars-server version 0.9.12 is now available in Fedora. Learn about hedgewars, and review the official trailer, at http://www.hedgewars.org/about.html.
Also new to Fedora is pmars (http://www.koth.org/pmars/).
vor (Variations on Rockdodger) is new to Fedora 14. This is a fast-paced, simple game reminiscent of Asteriods.