Championship Baseball is a traditional baseball simulation where gameplay takes place mainly on a split screen. One side shows an overview of the field, while the other side displays the batter, with the latter view disappearing when the ball is hit.
The game requires you to "draft" a team before play, composing the best possible squad based on each player's skill attributes. The game also allows a semblance of managerial control, and has an optional batting practice mode to warm up. It then allows you to play individual games, or participate in a 4 division, 24-team championship.