All Working NBA Jam '99 Cheats - Nintendo 64

Large players
Pause game play and press [L]x2, [C-Right], [L]x2, [C-Right], [L]x2, [C-Right], [Z]. A sound will confirm correct code entry.

Small players
Pause game play and press [L]x2, [C-Left], [L]x2, [C-Left], [L]x2, [C-Left], [Z]. A sound will confirm correct code entry. Repeat the code to make the players smaller than the ball.

Perfect shot
Pause game play and press [L]x2, [C-Up], [L]x2, [C-Up], [L]x2, [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.

Stronger pushes
Pause game play and press [L]x2, [Up], [L]x2, [Up], [L]x2, [Up], [Z]. A sound will confirm correct code entry.

On-fire team
Pause game play and press [L]x2, [Right], [L]x2, [Right], [L]x2, [Right], [Z]. A sound will confirm correct code entry.

Disable all cheats
Pause game play and press [L]x2, [Left], [L]x2, [Left], [L]x2, [Left], [Z]. A sound will confirm correct code entry.

Alternate camera angles
Press [Start] before the tip-off, select the "Camera" option, choose the desired view, then resume game play. The pre-game sequence will be displayed with the selected view. An alternate view may also be used during a foul line shot by pressing [R] before or after the shot.

New free throw shooter
Enter the team settings screen and use the "Player Match-up" option to change the current free throw shooter.