Sonic Advance - In-Box - GameBoy AdvanceSONIC IS BACK TO SAVE THE WORLD! The evil Dr. Eggman is at it again, with a brand new scheme to trip up Sonic and his pals. Maneuver your way through obstacles, puzzles and traps to collect the Chao Emeralds and defeat the vile Dr. Eggman before its too late! Play as Sonic, Knuckles, Tails, or Amy Link up to 4 players on one Game Pak Zip through levels filled with puzzles and traps at sonic speed Exchange chao between the Game Boy Advance and the