Passwords
At the title screen choose the second selection down and enter the following combination.

Effect				Password
BEAR Area 01 grassland		Kangaroo, Fox, Bear, Tiger
BEAR Area 02 Icecap		Fox, Mole, Bear, Frog
BEAR Area 03 Desert		Mole, Monkey, Bear, Bear
BEAR Area 04 Beach		Monkey, Tiger, Bear, Chicken
BEAR Area 05 Space		Bear, Monkey, Bear, Kangaroo
CHICKEN Area 01 grassland	Kangaroo, Mole, Chicken, Tiger
CHICKEN Area 02 Icecap		Fox, Monkey, Chicken, Frog
CHICKEN Area 03 Desert		Mole, Tiger, Chicken, Bear
CHICKEN Area 04 Beach		Monkey, Frog, Chicken, Chicken
CHICKEN Area 05 Space		Bear, Tiger, Chicken, Kangaroo
FOX Area 01 grassland		Kangaroo, Tiger, Fox, Tiger
FOX Area 02 Icecap		Fox, Frog, Fox, Frog
FOX Area 03 Desert		Mole, Bear, Fox, Bear
FOX Area 04 Beach		Monkey, Chicken, Fox, Chicken
FOX Area 05 Space		Bear, Bear, Fox, Kangaroo
FROG Area 01 grassland		Kangaroo, Kangaroo, Frog, Tiger
FROG Area 02 Icecap		Fox, Fox, Frog, Frog
FROG Area 03 Desert		Mole, Mole, Frog, Bear
FROG Area 04 Beach		Monkey, Monkey, Frog, Chicken
FROG Area 05 Space		Bear, Mole, Frog, Kangaroo
KANGAROO Area 01 grassland	Kangaroo, Monkey, Kangaroo, Tiger
KANGAROO Area 02 Icecap		Fox, Tiger, Kangaroo, Frog
KANGAROO Area 03 Desert		Mole, Frog, Kangaroo, Bear
KANGAROO Area 04 Beach		Monkey, Bear, Kangaroo, Chicken
KANGAROO Area 05 Space		Bear, Frog, Kangaroo, Kangaroo
MOLE Area 01 grassland		Kangaroo, Frog, Mole, Tiger
MOLE Area 02 Icecap		Fox, Bear, Mole, Frog
MOLE Area 03 Desert		Mole, Chicken, Mole, Bear
MOLE Area 04 Beach		Monkey, Kangaroo, Mole, Chicken
MOLE Area 05 Space		Bear, Chicken, Mole, Kangaroo
MONKEY Area 01 grassland	Kangaroo, Bear, Monkey, Tiger
MONKEY Area 02 Icecap		Kangaroo, Chicken, Monkey, Frog
MONKEY Area 03 Desert		Mole, Kangaroo, Monkey, Bear
MONKEY Area 04 Beach		Monkey, Fox, Monkey, Chicken
MONKEY Area 05 Space		Bear, Kangaroo, Monkey, Kangaroo
TIGER Area 01 grassland		Kangaroo, Chicken, Tiger, Tiger
TIGER Area 02 Icecap		Fox, Kangaroo, Tiger, Frog
TIGER Area 03 Desert		Mole, Fox, Tiger, Bear
TIGER Area 04 Beach		Monkey, Mole, Tiger, Chicken
TIGER Area 05 Space		Bear, Fox, Tiger, Kangaroo


SECRETS
Special level access
The game ends after the beach level but if you wait through the credits and the end screen you’ll be sent to the final level Space.

To get a whole different set of levels for the entire game hold L an R when you turn the game on. If done correctly the start screen will be red.