GAME GENIE CODES: 0-9.

 2 Crude Dudes (see Two Crude Dudes)

 688 Attack Sub

GAME GENIE CODES: A.

 Aaahh!! Real Monsters

 Abrams Battle Tank

 Addams Family

 Aero the Acrobat

 Afterburner 2

 Air Buster

 Aladdin

 Alex Kidd in the Enchanted Castle

 Alien 3

 Alien Storm

 Altered Beast

 Aquatic Games starring James Pond

 Arcus Odyssey

 Arnold Palmer Tournament Golf

 Arrow Flash

 Atomic Robo Kid

 Ayrton Senna's Super Monaco GP 2

GAME GENIE CODES: B.
 Back to the Future Part 3
 Ballz
 Bare Knuckle
 Bare Knuckle 2
 Barkley Shut Up & Jam!
 Barkley Shut Up & Jam! 2
 Bart's Nightmare
 Batman
 Batman & Robin, The Adventures of
 Batman Forever
 Batman Returns
 Batman Revenge of the Joker
 Battle Squadron
 Battletech
 Battletoads
 Beavis & Butthead
 Bimini Run
 Blaster Master 2
 Bonanza Bros.
 Boogerman
 Boxing Legends of the Ring
 Bubsy in Claws Encounters of the Furred Kind
 Buck Rogers in the 25th Century
 Bulls vs Lakers & the NBA Playoffs
 Burning Force
 "Buster" Douglas KO Boxing (see  James "Buster" Douglas KO Boxing)

GAME GENIE CODES: C.

 Cagey Capers (see Sylvester & Tweety in Cagey Capers)
 Calibre .50
 Castle of Illusion starring Mickey Mouse
 Castlevania Bloodlines
 Centurion - Defender of Rome
 Chakan - The Forever Man
 Chester Cheetah 2 - Wild Wild Quest
 Columns
 Columns 3 - Revenge of Columns
 Comix Zone
 Contra Hardcorps
 Cool Spot
 Crack Down
 Crossfire
 Cyberball