Zoo Tycoon DS Cheats & Tips

There are four bonus scenarios that are unlocked by completing a scenario on different difficulty settings.

- Easy
- Normal
- Hard
- Very Hard

at the title screen, do this with the D-pad:

Up, Up, Down, Down, Left, Right, Left, Right, and then repeat it once more and you should here a sound of an elephant (only if your volume turned up though)

Press the arrows:

UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, UP, UP, DOWN , DOWN, LEFT, RIGHT, LEFT, RIGHT

To unlock all animals, foliage etc.

Unlockable 4th difficulty, "gekimuzu".

To obtain a 4th difficulty, you need to get the highscore on
all 4 modes of gameplay.

Zoo keeper: 1200000+ points needed.
Tokoton 100: 1800000+ points needed.
Quest mode: 10000+ Yen needed.
Time attack: 600000+ points needed.

After getting all 4 high scores, a 4th difficulty appears in the top line of the option menu.

This difficulty means "Expert" or literally "difficult-player" and has a huge advantage of doubling all the normal points you achieve. This secret was found by mtpfreak and verified by bemani.