Mushroom Garden a.k.a. Funghi Gardening Kit
Mushroom Garden Seasons
Mushroom Garden Deluxe
(All these links are iOS, but there are these Android versions, too.)
The total downloading number of Nameko series exceeds 28 million now.
By the way, Nameko Saibai Kit Seasons(Mushroom Garden Seasons) updated today. This theme is "North American spring". This is very cute!