Collection items are needed to complete one of the many collections in the game. They are sometimes referred to as "Collectible Items" within the game.
“Pine Sources Entities Around City: Snowdrift (very seldom) Uses Collection: Green Belt Syntax ...Pine
“Sky Tower Sources Collection: Skyscrapers Uses Collection: Super Duper Syntax - Template - HelpSky Tower
Pages in category "Collection Items"
The following 200 pages are in this category, out of 877 total.