Demo of this beautiful game is finally available for Linux.
CityEngine is a standalone software that provides professional users in entertainment, architecture, urban planning, GIS and general 3D content production with a unique conceptual design and modeling solution for the efficient creation of 3D cities and buildings.
Indigo Renderer is an unbiased, physically based and photo-realistic renderer which simulates the physics of light to achieve near-perfect image realism. With an advanced physical camera model, a super-realistic materials system and the ability to simulate complex lighting situations through Metropolis Light Transport, Indigo Renderer is capable of producing the highest levels of realism demanded by architectural and product visualization.
Easily create and customize a new action (such as setting your desktop background), then choose when you want that action to run (Every 5 minutes? Every 10 days? Once on July 3rd?). Or you can simply run the action directly from the handy-dandy Gnome Statusbar menu.