Free Multiplayer Games for older computer
 

Playing over internet is fun. There seem to be many games that support online play.

Please posts only games that:
-work on machines with 1 gb ram smothly.
-install trough ubuntu software center is plus.
-have online play option where you can acutally meet players (they come to play) -populated games
or
-anonymious(no sign up) browser games count too! (with link)

My recomendations:
Hedgewars
Battle of weshnot
Blobby volley 2
Frozen bubble

Openarena springs to mind:

http://www.openarena.ws/smfnews.php

I recommend assaultcube, probably the best FLOSS FPS, and it works on older computers.

Ur Quan Masters has network deathmatch.

Also consider Skulltag, although you'll need a copy of DOOM 2.

Thanx for all,
Ur Quan Masters don't seem to have much players online, it even won't show servers..
I wanted to play with online community rather than with my friend.