Games that get played every year

I write a lot of lists of the best games by various measures. I've
come up with metrics like my month metric which
identify the best games. Here's yet another list. These are the games
that have been played every year (at least once) since I discovered
them:

Already played in 2004

• CallMyBluff 1998 -
  
• EuphratAndTigris 1998 -
  
• Basari 1999 -
  
• ApplesToApples 1999 -
  
• TakeItEasy 1999 -
  
• RicochetRobot 1999 -
  
• ZappZerapp 2000 -
  
• FlinkePinke 2000 -
  
• Traumfabrik 2000 -
  
• Medici 2000 -
  
• BattleLine 2000 -
  
• CantStop 2000 -
  
• 6 nimmt! 2000 -
  

Not yet played in 2004

• RoboRally 1997-
  
• EnGarde 1998 -
  
• Elefantenparade 1999 -
  
• Samurai 1999 -
  
• Ra 1999 -
  
• LostCities 1999 -