6.5
http://www.gamespot.com/gba/puzzle/mariopartyadvance/review.html
"All told, Mario Party Advance is quite different from the Mario Party games we're familiar with on the N64 and GameCube. The majority of the minigames and play modes included with the GBA game are geared toward single-player play. That's not necessarily a bad thing, but it does mean that Mario Party Advance isn't much of a party when multiple players are involved."
http://www.gamespot.com/gba/puzzle/mariopartyadvance/review.html
"All told, Mario Party Advance is quite different from the Mario Party games we're familiar with on the N64 and GameCube. The majority of the minigames and play modes included with the GBA game are geared toward single-player play. That's not necessarily a bad thing, but it does mean that Mario Party Advance isn't much of a party when multiple players are involved."