I have been having so many problems trying to find cheat codes for FIFA 99 that actually work. PLEEEASE reply if you have any codes that will add any new teams or other features. Thanks!

there are no cheats for fifa 99!!!

OKAAAAAAAAAAYYYYYY. Jeez. . .sorry if I offended you. Take a chill pill.

At last,a game without any cheats!!!
Only you,you'r computer and Barca VS Real Madrid!!!

I hate real!

Um,
There are actually a few cheates.
At the opening screen type oldies.you get to play europe games from old days.
type win while game loads and players run out in winter clothes.

NO!, they don't work. I have tried them 1000 times and nothing happened. If it worked for you can you show us a screenshot?