Lists are complementary to categories. They must be maintained by hand (though the use of templates may simplify that) but they can be arranged and grouped in more depth than categories can.
“Farmers make money and gain experience by planting seeds and selling their harvest. They can...Seeds
“Facilities are the "Central Focus" of the game and allow you to create new items using your...Facilities
“Trees can be purchased from the Store under the Trees tab or sent and received as Gifts. Many of...Trees
“Animals can be purchased from the Store under the Animals tab or received as Gifts. Animals can...Animals