Tomodachi Collection

Tomodachi Collection is a social simulation game featuring a cast of user-created Mii avatars, together populating an apartment complex located on an island . To add Miis, the player can transfer Miis directly from their Wii to their Nintendo DS , import them from other players' DS consoles via wireless local connectivity, or create new ones using the in-game Mii Maker. In either case, the player manually modifies their Miis' appearance and personality. There are four temperament categories Miis can occupy, which, alongside their assigned date of birth, conjures an "ideal job" that matches them.

Upon creation, Miis request assistance with a particular problem at random intervals. These include asking for food, clothing, occasional guidance on prospective relationships, and player participation in short minigames . Satisfying their needs advances their level, upon which the player can gift them new clothes, interior designs for their apartment, personalized catchphrases , or songs for them to perform. Completing minigames awards the player with valuables that can be exchanged for in-game currency.

The player can optionally eavesdrop on the Miis' dreams while they sleep. Outside of the player's influence, the Miis regularly interact with each other, forming friendships and occasional conflict. If two friendly Miis share romantic attraction, one can confess their love to the other, which if successful pairs them as a couple. Marriage can occur following additional interactions.

As the player continuously appeases the Miis, new venues and shops on the island become unlocked. These include a "Career Hall" where jobs are formally assigned to Miis, a "Compatibility Tester" that gauges two Miis' likelihood of friendship, and a vendor for purchasing apartment interiors. An in-universe news broadcast occurs regularly to inform the player of recent events on the island.