Eventually I realized there were blue, green, AND red people in the game. *sigh* Green and blue guys are teammates. Red guys are enemies. That seems simple enough, except that I couldn’t tell the green guys from the red guys.
So the rest of the night went like this: “Oh it’s a green guy, I won’t shoot him. Arrrgh!!! I’m dead; again. He must have been red.” Or, “There’s a red guy! I’ll take him out. Oops, lost more points for killing a team member.”