There will be 4 exclusive downloadable items for the Slime Mori Mori Dragon Quest 3, and each will be distributed separately through the duration of 4 weeks. You must download them all for the complete set.
As for McDonald's original Slime Ship Battle DX, the only requirement is that the customer has a DS. Clearing the mini-game will reward the player with a 1-day reusable coupon for drinks and burgers.
More photos in the link below.