NBA Jam: Tournament Edition - Game Gear

500 of the Greatest Game Covers! (500 items)
list by Happy Vader

Game Gear (82 items)
list by diabolical dr voodoo

Play two-on-two arcade basketball with players from all the NBA teams. Gameplay is fast and action-packed with lots of weird power-ups, monster jams and secret celebreties. The tournament version of the game adds an extra tournament mode in which you have to defeat all the NBA teams to unlock extra players (2 extra players for almost every team) after which the computer becomes better.