Every monster has at least four different things that they like. For every unique object that they like that's placed near them, that monster's happiness will increase by 25%. Placing two of the same item near a monster will still only increase happiness by 25%. For purposes of making other monsters happy, a Rare monster is the same as its normal version. For example, a Toe Jammer likes a Furcorn, and also likes a Rare Furcorn. If a monster is close to both the normal and Rare versions of a monster it likes, its Happiness increases only by 25%, not by 50%. How quickly monsters earn coins is based on their Happiness.
Normally, for something to increase a monster's happiness, the two objects must be placed side by side. However, purchasing a Unity Tree from the market (available at level 16) will allow you place decorations and monsters anywhere you like on islands, including into Storage or a Hotel, without affecting the monster's happiness level.
When you view a monster's Likes in the game, one of the items will be a Mystery Like - a 'like' that is shown in the game only as a question mark, and is left as an exercise to you to figure out. The Likes lists include these likes, which makes reaching 100% happiness a cinch!
Full List of Likes
- The Shugabush likes the Razzli Tree in Shugabush Island only, because the Inverdigus Sprig is only found in Plant Island.
- Rare Single-element monsters have a unique style of likes that are different to the normal Rare Monsters. Rare Single-element monsters "like" only particular monsters, including their common counterparts; other Rares "like" only their common counterpart plus three decorations (the only exception to this is the Rare Wubbox, which only likes decorations bought from the StarShop.
- Wubbox,its rare counterpart, and the Dipsters are the only Monsters who don't like any other monsters, only decorations.
Rare Double Element
Rare Triple Element