Victory calls for strategic planning, as before a match, players can equip their blades with different parts to for enhanced offensive or defensive attributes. As in the anime series (and the corresponding Hasbro toy line), each blade is assembled from five basic parts, which combine to give the top a particular shape, weight, center of gravity, and spin-tip friction. The player with the last in-bounds top spinning is the winner. Based on the animated series, Beyblade: Metal Fusion - Battle Fortress revolves around tournament battles fought with special spinning-top 'blades.' Blades are revved up and let loose, to crash and rebound in a fighting area, which is often walled or bowl-shaped to keep the tops returning to the center for additional collisions.