These are cheats from the first issue of the NeoPets magazine, where
they put some cheats in the issue. Here are the codes, and what do with
them. Also, all these cheats are once per opening the game. Once you
finish a game, press F5, and you will be able to use it on the next two
games also.

Carnival of Terror

When you type " custard " during gameplay, the clock will reset, and give
you more time.

Warf Rescue Tea

Type "trappedkadoaties" during gameplay to get one extra life.

Frumball

Type "frumball" during gameplay to get one extra life. (note- I suggest
doing it during the "click to go on to level whatever screen.)

Whack-A-Staff-Member

Type "a5paragu5" during gameplay, to get a larger mallet.

Eliv Thade

Type "rehaxtint" during gameplay to get an extra hint.