Ouchi Mainichi Tamagotchi is a virtual life game in which players own and customize a Tamagotchi doll house, and look after the Tamagotchi "dolls" by playing a variety of mini-games. At first, there are only a few rooms and several characters available, but more rooms, house colors, furniture, and characters are unlocked as the character plays. The player earns money by playing mini-games and doing other tasks like taking out the rubbish or fishing in the koi pond. The player can then use the money to buy more furniture, wallpapers, floors, and characters. The player can change the colors of the house whenever they want, and they can also place the Tamagotchis anywhere they want in the house.