ABA Basketball
Go to the option screen and select codes. Enter the code: OLDSCHOOL.

WNBA Basketball
Go to the option screen and select codes. Enter the code: GOTGAME.

Chicago Rooftop Court
Go to the option screen and select codes. Enter the code: WINDYCITY.

Little Players
Go to the code menu and type in SMALLSHOES. Watch it. The code is case-sensitive.

Xbox ball
Go to the code menu and type in BACHMAN.

Create Perfect Team In Season
This is a good code to use if you want to make a great team when you already started your season and saved.
From the main menu in "Season" go to "Front Office" then go to "Ownership Change" then make every team a user then make all the trades you want. Then once you have made the dream team that you have wanted, go and do the same thing over again except this time change all the users back to "CPU" and just keep the Team(s) you want.

Secret Teams
To get secret teams you will need to do a season. After the season if you made the playoffs you will need to get to the finals. If you get to the finals you need to win the finals. Then say you won with the Lakers you will get an old Lakers team. You can only play with them in exhibition mode. Any team you beat it with you will get an old team of them. Hint you need to play an 82 game season.

Beach ball
Enter the options screen and select "Codes", then enter "SANDINMYSHORTS" as a code. Repeat the code to disable its effect.

Soccer ball
Enter the options screen and select "Codes", then enter "HOOLIGAN" as a code. Repeat the code to disable its effect.

Volleyball
Enter the options screen and select "Codes", then enter "SPIKEIT" as a code. Repeat the code to disable its effect.

Infinite turbo
Enter the options screen and select "Codes", then enter "CARDIOMAN" as a code. Repeat the code to disable its effect.

More three pointers
Enter the options screen and select "Codes", then enter "THREE4ALL" as a code. Repeat the code to disable its effect.

More alley-oops
Enter the options screen and select "Codes", then enter "IGOTHOPS" as a code. Repeat the code to disable its effect.