For easier browsing I have split the concept gallery into the following sections: air and spacecraft, land vehicles, buildings, exteriors, interiors, robots, and weapons. Besides that, I've been busy doing concepts of buildings and spaceships, and have added five new concepts to the gallery: Recon vessel, Patrol vessel, Intel building, Apartment building, Military HQ. Concepts like that are great fun to make and I plan on using them in one of my future sci-fi images, but I still need to make more buildings. I try to keep the geometry of each building relatively simple, so once I put them all together, the scene won't be too heavy to work with.