NBA Jam Cheats

Secret Characters
On the main title screen, before you press start (has the smoke, and nba jam logo)

Unlock Democrats: Hit [Left] on the D Pad 13 times, then hit [X]
Unlock Republicans: Hit [Right] on the D Pad 13 times, then hit [X]
Unlock Beastie Boys: Hit [Up], [Up], [Down], [Down], [Left], [Right], [Left], [Right], [B], [A]
Unlock J. Cole and 9th Wonder: Hit [Up], [Left], [Down], [Right], [Up], [Left], [Down], [Right], [A], [B]

With 2 controllers type in the following names
Name entry screen use 2 controllers

Unlike sprite team: Spr. Ite
Unlike team jordan: Jor. Dan
Unlock mascots: Mas. Cot
Unlock team addidas: Adi. Dis
Unlock Colin Cowherd and Michelle Beadle: Esp. Nsn
Unlock The Neighbors (Mathias Murphy and Kevin Durant): Mmk. D35
Unlock Tim Kitzrow (Announcer) and Mark Turmell (Developer): Mjt

Trophies
There are 6 Bronze Trophies, 14 Silver Trophies, 6 Gold Trophies, and 1 Platinum Trophy.

3 The Hard Way (Gold): Beat the Beastie Boys in Remix Campaign
Atlantic Division Represent (Silver): Defeat the Atlantic Division Legend Team in Classic Campaign
BOOMSHAKALAKA! (Platinum): Unlock all other Trophies
Burning (Bronze): Keep yourself or your teammate on fire until it exhausts by making 5 or more unanswered baskets
Central Division Represent (Silver): Defeat the Central Division Legend Team in Classic Campaign
Classical Campaign (Gold): Defeat the hidden boss after completing Classic Campaign
Clean Sheet (Gold): Win a Classic or Remix game without letting the opposing team score
Double Up (Silver): Beat the CPU by doubling their score in a Classic 2v2 or Remix 2v2
Eastern Conference Division (Silver): Face the hidden boss after Classic Campaign with a team from each division in the Eastern Conference
Finger Roll (Bronze): Make 5 layups in a row without getting blocked
First Time for Everything (Silver): Win a ranked game online
From Downtown (Bronze): Score 50% of your team's points while only shooting three pointers
He's on Fire! (Bronze): Hit a buzzer beater while on fire
Iron Will (Silver): Break the backboard in a Classic or Remix game with an alley oop!