Secret Codes:
Press Turbo, Jump, and Pass on the "VS" screen to change the icons below the helmets. The numbers below are the number of times the buttons need to be pressed. After pressing the buttons, you must then press the D-pad (or Analog Stick) in the indicated direction. You'll see the name of the code and hear a sound to confirm entry.

T-J-P-D		Effect
		
3-1-2-Up	    Powerup Offense
4-2-1-Up	    Powerup Defense
2-3-3-Up	    Powerup Teammates
0-4-5-Up	    Incredible blitzing
5-1-4-Up	    Infinite turbo
1-5-1-Up	    No punting
3-4-4-Up	    No interceptions
2-1-0-Up	    No first downs
0-4-0-Up	    Giant head
0-1-0-Up	    Late hits
1-0-0-Up	    Teams playbook
4-3-3-Up	    Invisible
3-0-3-Up        Astroturf field
0-2-1-Right	    Display more field
2-0-0-Right	    Big head mode
2-0-3-Right	    Big head team
1-4-1-Right	    Team big players
3-1-0-Right	    Team tiny players
0-5-0-Right	    Giant football
1-0-2-Right	    Don't show receiver name
5-5-5-Right	    Rain
2-2-2-Right	    Night game
1-2-3-Right	    Headless game
2-2-3-Right	    Unlimited throw distances 
3-1-4-Down	    Smart CPU
0-0-1-Down	    Display field goal percent
4-2-3-Down 	    No fumbles
5-2-2-Down	    Mystery ball carrier
2-2-2-Left      Always QB in multi-player 
2-5-0-Left      Quick passes
0-3-2-Left      Quick turbo running 
3-1-2-Left      Powerup blockers
2-1-1-Left      Going OB ok
1-2-3-Left      Super field goals
3-2-1-Left      No head
2-1-2-Left      Clear weather
3-3-3-Left      Highlite invisible receiver
4-0-4-Left      Powerup Speed (2 player agreement only) 
1-1-5-Left      No play selection (2 player agreement only)
1-1-1-Up        Reset tournament mode (2 player agreement only)
4-4-4-Up        Super blitz(2 player agreement only)
5-5-5-Up        Super blitz (2 player agreement only)
1-1-1-Down      Tournament mode (2 player agreement only)
0-1-2-Down      No cpu help (2 player agreement only)
4-2-3-Right     Super passing(2 player agreement only)
5-0-0 Left      Turn off stadium  
5-0-1 Down      Day stadium 
5-0-1 Left      City stadium   
5-0-1 Up        Old day stadium   
5-0-2 Down      Night stadium  
5-0-2 Left      Future stadium   
5-0-2 Up        Old night stadium   
5-0-3 Down      Snow stadium   
5-0-3 Left      Roman stadium 
5-0-3 Up        Old snow stadium  
5-1-4 Up        Infinite turbo   
5-2-5 Down      Weather: snow   
5-5-5 Right     Weather: rain   
5-5-5 Up        Hyper blitz1 (only in one player mode)

Hidden characters:
Enter these names and pin numbers at Record Keeping screen.

PUNKR		1221
EDDIE		3333
DINO		1111
PUNKB		2112
MXV		1014
SMILE		1111
SHRUNK		6666
BOXER		2111
SAD		1111
PIRATE		1111
MOOSE		1111
BRAIN		1111
ALIEN		1111
RALPH		1111
RAIDEN		3691
TREX		1111
CURTIS		1111
SHINOK		8337
SKULL		1111
LEX		7777
JASON		3141
LUIS		3333
THUG		1111
JAPPLE		6660
ROOT		6000
TURMEL		0322
JENIFR       3333
SAL          0201
DANIEL		0604
GENTIL		1111
FORDEN		1111
DAVID		3333
AUBREY		7777
BRIAN		2221
AZPOD		4777
AOB		1111
ALEC		1197
JOVE		6644
FRANZ		1010
CALEB		0996
GRINCH		0222
JEFF		1111
WHODAT		1844
GUMBY		8698
NATHAN		0515
GUIDO		2222
RANDU		6666

Thanks to Revolution readers Brad Moffatt, stncldakra, Jordan Almond, Mr. Blitz2000, Sufyan, Kevin, Nick Olson, jt palumbo, BlitzMaster2000, Cartman 15, Brad Cason, Cassidy, Keith Lee, K@O, tom, and Evan Cerny