C2AC-346F + C2C3-1D28 Protection against most hazards
DFBC-3FD4 Start with 2 lives
D7BC-3FD4 Start with 4 lives
D9BC-3FD4 Start with 6 lives
D5BC-3FD4 Start with 8 lives
DBBC-3FD4 Start with 10 lives
4DBC-3FD4 Start with 21 lives
9DBC-3FD4 Start with 51 lives
59BC-3FD4 Start with 76 lives
BBBC-3FD4 Start with 100 lives
DDB2-4D64 Infinite lives
EE8C-C4DD Stay invincible longer after getting hit (Road Runner blinks)
0D8C-C4DD Stay invincible for less time after getting hit (Road Runner blinks)
C2C5-C7AF Stay invincible after getting hit until you fall & die (Road Runner blinks)
6DC5-C70F Stay invincible after getting hit until you fall & die (Road Runner does 
not blink)
7DBD-44D7 Start with more birdseed on the turbo speed meter
FDBD-44D7 Start with less birdseed on the turbo speed meter
7D26-3404 Eating birdseed restores turbo speed meter to maximum
DD26-3404 Eating birdseed does nothing
DDC6-3D67 Using turbo speed does not use up bird seed
DDBB-4467 Stop timer
D7B0-346F Start timer at 3:00 instead of 5:00
D5B0-346F Start timer at 7:00
DBB0-346F Start timer at 9:00
C229-C707 Hearts worth nothing
F3BB-3FA4 + 3FBB-3F64 + DFBB-3FD4 Start on level 1, sublevel 2
F3BB-3FA4 + 3FBB-3F64 + D4BB-3FD4 Start on level 1, sublevel 3
F3BB-3FA4 + 3FBB-3F64 + D7BB-3FD4 Start on level 1, sublevel 4
F3BB-3FA4 + 3FBB-3F64 + D0BB-3FD4 Start on level 2, sublevel 1
F3BB-3FA4 + 3FBB-3F64 + D9BB-3FD4 Start on level 2, sublevel 2
F3BB-3FA4 + 3FBB-3F64 + D1BB-3FD4 Start on level 2, sublevel 3
F3BB-3FA4 + 3FBB-3F64 + D5BB-3FD4 Start on level 2, sublevel 4
F3BB-3FA4 + 3FBB-3F64 + D6BB-3FD4 Start on level 3, sublevel 1
F3BB-3FA4 + 3FBB-3F64 + DBBB-3FD4 Start on level 3, sublevel 2
F3BB-3FA4 + 3FBB-3F64 + DCBB-3FD4 Start on level 3, sublevel 3
F3BB-3FA4 + 3FBB-3F64 + D8BB-3FD4 Start on level 3, sublevel 4
F3BB-3FA4 + 3FBB-3F64 + DABB-3FD4 Start on level 4, sublevel 1
F3BB-3FA4 + 3FBB-3F64 + D2BB-3FD4 Start on level 4, sublevel 2
F3BB-3FA4 + 3FBB-3F64 + D3BB-3FD4 Start on level 4, sublevel 3
F3BB-3FA4 + 3FBB-3F64 + DEBB-3FD4 Start on level 4, sublevel 4
F3BB-3FA4 + 3FBB-3F64 + FDBB-3FD4 Start on level 5, sublevel 1
F3BB-3FA4 + 3FBB-3F64 + FFBB-3FD4 Start on level 5, sublevel 2
F3BB-3FA4 + 3FBB-3F64 + F4BB-3FD4 Start on level 5, sublevel 3
F3BB-3FA4 + 3FBB-3F64 + F7BB-3FD4 Start on level 5, sublevel 4
DD33-4DDD 1-up worth nothing
D433-4DDD 1-up worth 2
D733-4DDD 1-up worth 3
D033-4DDD 1-up worth 4
D933-4DDD 1-up worth 5
7D83-47DD Bogus jump
FD83-47DD Better jump
DC83-47DD Super jump
D983-47DD Mega jump