Team Arena cost about $30 is an add-on to Quake 3 (not a stand alone), plays as a separate game, and if you have it you should be able to play others in Q3a since it is an add on. It updates the Q3a exe to the 1.27 version though. This may cause problems unless you update to 1.27. I wish that they could have incorporated the weapons and stuff to Q3a since I prefer it's game play, but love the weapons and items in TA.