Feed Mii is set in the same world as Find Mii, in which a chef runs a restaurant while the monarch is kidnapped by monsters. The previous chefs had ran away. Various heroes stop by the restaurant to get food before hunting monsters.
The main gameplay is mixing the ingredients to create meals for the heroes. The heroes will bring in various ingredients and as the chef, the player makes the desired meals. Using the right mix of ingredients will unlock recipes for the recipe book, with perfect recipes showing all possible ingredients. Some creations result in jumbo sized portions if made really well. The leftover ingredients get put in the fridge for another day though only 5 can remain. Leftover ingredients can also be used
After feeding all the heroes, the player gets a newspaper describing the progress of the heroes and a review of the player's meal. The meal rating times the number of heroes determines how much progress was made.
There are 12 kinds of ingredients
- The heroes are going on the same route as Find Mii.