Free and OpenSource Games

[Malice]

I am looking for interesting free or opensource games...
FreeCiv (http://www.freeciv.org/index.php/Freeciv)
FreeOrion (http://www.freeorion.org/index.php/Main_Page) - Still really early in development
Advanced Strategic Command (http://www.asc-hq.org/)
FreeAllegiance (http://www.freeallegiance.org)
Boson (http://boson.eu.org)
C-evo (http://www.c-evo.org/)
Glest (http://glest.org/en/)
WinBoard (http://www.tim-mann.org/xboard.html)
TripleA (http://triplea.sourceforge.net/mywiki)

[Addendum]

There are some good ones here, if you like retro games

http://www.asahi-net.or.jp/~cs8k-cyu/index_e.html

[Malice]

added a few

[WhatsHisFace]

Just go to The Underdogs.

[Cosmic]

-Anarchy Online
-Infantry Online
-Shadowbane

[Addendum]

Cube Engine (http://www.cubeengine.com/cube.php4)

[Malice]

Just go to The Underdogs.

been there done that...but the ones I was listing were free and opensource...

[Wattshout]

Frets on fire (guitar hero clone)
http://fretsonfire.sourceforge.net

Good forum for news and mods :
http://http://www.fretsonfire.net/cgi-bin/ikonboard.cgi

Btw, All guitar hero songs can be found for it if you know where to look.