NBA Jam '99 Cheats, Cheat Codes and Hints for Nintendo 64

Large ball:
Pause game play and press L(2), C-Left, L(2), C-Up, L(2), C-Right, L(2), C-Down, Z. A sound will confirm correct code entry.

Stronger pushes:
Pause game play and press L(2), Up, L(2), Up, L(2), Up, Z. A sound will confirm correct code entry.

Tied score:
Pause game play and press L(2), Down, L(2), Down, L(2), Down, Z. A sound will confirm correct code entry.

On-fire team:
Pause game play and press L(2), Right, L(2), Right, L(2), Right, Z. A sound will confirm correct code entry.

Disable all cheats:
Pause game play and press L(2), Left, L(2), Left, L(2), Left, Z. A sound will confirm correct code entry.

Large players:
Pause game play and press L(2), C-Right, L(2), C-Right, L(2), C-Right, Z. A sound will confirm correct code entry.

Small players:
Pause game play and press L(2), C-Left, L(2), C-Left, L(2), C-Left, Z. A sound will confirm correct code entry. Repeat the code to make the players smaller than the ball.

Long distance dunks:
Pause game play and press L(2), C-Down, L(2), C-Down, L(2), C-Down, Z. A sound will confirm correct code entry. The player that had possession of the ball may now dunk from any location on the court for the remainder of the quarter.

Perfect shot:
Pause game play and press L(2), C-Up, L(2), C-Up, L(2), C-Up, Z. A sound will confirm correct code entry. The next shot from the player that had possession of the ball will always score from any location on the court.