Linux Native Games

I'm not really a gamer but it's nice to play something from time to time. Since I switched to Linux I discovered is a little difficult to find good games that run natively in Linux. Searching, I found some good ones. Here's the list:

1. Title: Planeshift
   Genre: MMORPG
   Website: www.planeshift.it
   
   
2. Title: Savage
   Genre: RTS
   Website: www.s2games.com
   Installation Instructions: www.linux-gamers.net
   
   
3. Title: Sauerbraten
   Genre: FPS
   Website: www.sauerbraten.org