World Stadium EX is the first game in Playstation of the World Stadium series.

The game features different game modes:
- VS Mode: Play against another human player or against the computer.
- Season Mode: Choose a team and play a season.
- Mini games: Choose a character and play different mini games of batting, throwing, etc.
- Training Mode: This mode lets the player practice batting, throwing and catching.

The game also features other game modes that will be unlocked playing the main modes.