At the play selection screen, press Up(2) on the top left corner of the screen.

At the versus screen, press Turbo, Jump, and Pass to change the icons below the helmets. The numbers in the following list indicate the number of times each button is pressed. After the icons have been changed, press the D-pad or Analog-stick in the indicated direction to enable the code. If you entered the code correctly, you will see the name of the code and hear a sound. For example, to enter 1-2-3 Left, press Turbo, Jump(2), Pass(3), Left. Note: More then one code may be activated per game.

Result	Code
Infinite turbo	5-1-4 Up
Fast turbo running	0-3-2 Left
Power-up offense	3-1-2 Up
Power-up defense	4-2-1 Up
Power-up teammates	2-3-3 Up
Power-up blockers	3-1-2 Left
Super blitzing	0-4-5 Up
Super field goals	1-2-3 Left
No interceptions	3-4-4 Up
No random fumbles	4-2-3 Down
No first downs	2-1-0 Up
No punting	1-5-1 Up
Allow stepping out of bounds	2-1-1 Left
Fast passes	2-5-0 Left
Turn off stadium	5-0-0 Left
Lights out	5-3-4 Down
Late hits	0-1-0 Up
Show field goal %	0-0-1 Down
Show punt hang meter	0-0-1 Right
Use team plays	1-0-0 Up
Hide receiver name	1-0-2 Right
Invisible receiver highlight	3-3-3 Left
Invisible	4-3-3 Up
Big football	0-5-0 Right
Big head	2-0-0 Right
Huge head	0-4-0 Up
No head	3-2-1 Left
Headless team	1-2-3 Right
Team tiny players	3-1-0 Right
Team big heads	2-0-3 Right
No play selection [Note 1]	1-1-5 Left
Show more field [Note 1]	0-2-1 Right
No CPU assistance [Note 1]	0-1-2 Down
Power-up speed [Note 1]	4-0-4 Left
Hyper blitz [Note 1]	5-5-5 Up
Smart CPU opponent [Note 2]	3-1-4 Down
Tournament mode [Note 3]	1-1-1 Down
Always quarterback [Note 4]	2-2-2 Left
Always receiver [Note 4]	2-2-2 Right
Old day stadium	5-0-1 Up
Day stadium	5-0-1 Down
City stadium	5-0-1 Left
Old night stadium	5-0-2 Up
Night stadium	5-0-2 Down
Future stadium	5-0-2 Left
Old snow stadium	5-0-3 Up
Snow stadium	5-0-3 Down
Roman stadium	5-0-3 Left
Grass field	3-0-0 Up
Asphalt field	3-0-1 Up
Dirt field	3-0-2 Up
Astroturf field	3-0-3 Up
Snow field	3-0-4 Up
Fog on	0-3-0 Down
Thick fog on	0-4-1 Down
Weather: clear	2-1-2 Left
Weather: snow	5-2-5 Down
Weather: rain	5-5-5 Right
Night game	0-2-2 Right

Note 1: Two player agreement required.

Note 2: Only in one player game.

Note 3: Only in two player game.

Note 4: Two human teammates required.