Beyblade stadiums have different effects. In Hasbro they show which stadium beyblades are effective against. Like a defense bey with a defense stadium it would have an advantage. Some stadiums are for attack like one. Stadiums have special parts like holes to lose speed or just something in the middle to lose speed. The red stadium otherwise known as the Vortex Stadium makes your beyblades lose speed because the stadium is built so the beys can barely move freely. The blue and black stadium are for attack and the beys can spin more better and attack more. they also have holes at the side which when a bey falls automatically lose. It make them lose speed quickly in a small spot. Many stadiums are in Toys R' Us. If you go on Black Friday you can get sales like when I went today ( November 23, 2012) I bought 2 beys and got the third on FREE. I also bought a stadium for 15 bucks. They also sell stadiums in a bundle with beyblades which they usually have sales.