The first non-D&D RPG I played was Boot Hill. I had a copy of the first printing of Boot Hill. I remember the first and only game we played of Boot Hill. I believe we tried to have ten or more players in the first game. Because of the simultaneous game play, each player wrote down what his character was going to do. The result was hilarious. One of the players said they were going to buy a bath. A gun battle erupted almost immediately. The character taking a bath was out of the action until a stray round came through the window and hit the tub. Before the character in the bath could react, half the town was dead from the gun battle. It was fun to watch, but deadly.