Baseball Mogul begins in the spring of 2001 with a 25 player roster, featuring the real names, statistics, and photos of the major league baseball players. You also start with a minor league system with extra players you can call up to your ballclub should the need arise. As General Manager (GM), your job is to build the best lineup of players to take your team to the Championship Series. You can make complex player trades and sign players to multi-year contracts as you build your team, but you'll have to compete with the other team GMs, and negotiate with the player's agents. If your new players are good enough, have them join your team right away, otherwise send them to your minor league franchise for training and improvement. Then, as the season progresses you choose which players stay in the big leagues, which ones get sent down to the minors, and which ones get released or traded.