The basic controls in KOF 2002 include movement using the joystick, light punch (A), medium punch (B), heavy punch (C), light kick (D), and heavy kick (E). You can also perform special moves using combinations of these buttons.

To perform a special move, input the specific command for your character while pressing the appropriate attack button. Each character has unique special moves, so consult the move list for details on controls for each fighter.

In team mode, you select a team of three characters to battle against an opposing team, while in single play, you control just one character for a series of fights. Team mode emphasizes strategy and synergy among chosen fighters.

To unlock new characters in KOF 2002, you typically need to complete specific challenges or reach certain milestones during the gameplay. Keep an eye out for completion criteria such as defeating certain opponents or achieving a certain score.

MAX mode allows characters to enhance their abilities. Here's how to use it:
1. Fill your MAX gauge by successfully landing attacks.
2. Activate MAX mode by pressing the designated button once the gauge is full.
3. In MAX mode, use enhanced moves to maximize your damage output.
4. Return to regular mode to avoid depleting your gauge.