Activision Code:
0E3C7DF21645EBB3
0C072FA3F893D77F

Deactivate Gravity (Press R1):
EC4614DDF8FCF7FF
3C102127C648FEEE

Activate Gravity again (Press L1):
EC4614DDF8FCF3FF
3C102127C648FEC6

Dead A.I.:3C0C9FBFFBDCFEF6
3C0C9FC3F8FCFEFE

Never crash when you are landing:
3C158AFFFBDCFEF6
3C158A03F8FCFEFE
3C158C9FFBDCFEF6
3C158CA3F8FCFEFE

All Challenges:
5C22F987F891FEF1
1DF82FD0F8FCFEFE

Endless Turbo:
2C21144BF8FCFEF1

Moonlike  Gravity:
2C21144BF8FCFEF0

Big Head Mode:
2C21144BF8FCCEFE

Tiny Mode:
2C21144BF8FCFDFE

Endless Turbo and Moonlike Gravity:
2C21144BF8FCFEF3

Big Head Mode and Tiny Mode:
2C21144BF8FCCDFE

All Cheats:
2C21144BF8FCCDF0