According to the Sega blog some cool swag will be included in pre-orders. Depending on where you go you can get a soundtrack, black or white t-shirt.

If you pre-order MADWORLD at HMV you can get the soundtrack CD for free. This is a 20-track CD.

If wearable merch is more your thing, then you can get this cool t-shirt from Gamestation when you pre-order MADWORLD from there.

You can get a different design when you pre-order MADWORLD from Game.

It’s possible that other pre-order items will appear around the world but we haven’t received word on anything else as of yet.