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Play NBA Jam '99 (GB Compatible · US_EU edition · English) Online
NBA Jam 99
Play NBA Jam '99 online on GBC. Take a team through a full season, jump into the playoffs or practise passing and dunks before a single match against the computer. Turbo movement and the On Fire effect give this basketball game its lively pace, while the default buttons change their roles as possession switches between attack and defence.
Browser play

Game Boy Color (GBC) — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B | Z / X |
| START / SELECT | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play NBA Jam '99
Quick start
Press START at the title, choose PRACTICE with the D-pad and confirm with A, B or START. Select your team and practise passing, jump shots and turbo movement before competition.
Controls
Default layout: the D-pad moves, A passes or steals and B shoots or blocks. Hold B for a jump shot; near the basket use B with START for a dunk. Hold START for turbo; SELECT pauses.
NBA Jam '99 — About this game
NBA Jam '99 — Use Practice to learn how a quick B tap differs from holding it for a shot, then combine START with movement to add pace. Passing to a better-positioned teammate can open a clearer approach to the basket. The Head-to-Head option is a single game against another team in this one-player title. Keep the passwords supplied by the game if you want to resume your progress.
NBA Jam '99 Game manuals
Cheats
No cheats have been added for this edition.
Player verification and sources
Browser play was reviewed before this edition was published in the catalogue. The date below is the catalogue publication date, not the game’s original release date.
- Browser test and catalogue publication date
- Browsers and devices
- PC: Chrome, Edge and Firefox. Mobile: Chrome on Android and Safari on iPhone and iPad.
- Player engine and core
- EmulatorJS 4.3.0-pre · gb
- Tested by
- rwEmulator
Sources and editorial basis
rwEmulator reviews edition metadata, release information, game manuals and first-hand browser-play notes. Available manuals are linked below; the editorial policy explains how facts are checked and corrections are handled.