GraviTrax: Magnetic Cannon Expansion M4 Play your cards face down

Play your cards face down to prepare your dirty schemes

ensuring cards are protected when not in use

Everyone works together in a team

cartographers and astronomers

Each scenario has its own collection of maps and notes

GraviTrax: Magnetic Cannon Expansion M4 Play your cards face downWatch your marbles take off like a shot with the GraviTrax Magnetic Cannon! Launch your marble through your run with the amazingly powerful GraviTrax Magnetic Cannon! Simply place two marbles in front of the Cannon; when your marble hits, it sends the front marble blasting down the track! A high powered magnet gives the marble a burst of speed to help extend your run up inclines and down tracks. A great addition to any GraviTrax Starter Set; comes