IncGamers: Imagine a house. Just a simple, ordinary house. It's functional and cosy, even well-designed when viewed from certain angles; but the extremities of the building have some ugly flaws. The gutters were attached at a wonky angle, and someone left a few Christmas decorations stuck up on the roof, which now look sad and slightly creepy when it rains.
Luckily, the builders of the house are coming back. They're going to add an extension and fill it with pretty objects. Best of all, there's the promise that they'll leave their tools behind so that you can correct any other blemishes that might crop up when they've gone.
CitiesXL 2012 is that extension, and its user interface is the sloppy DIY job done on the bookshelves.