Back in the day, we did some concept work for XCOM- Game Nobody Liked. These were a series of models that I made to pass over to the concept team. 2K sent over the original concepts for these guys and we were to create upgrades and add-ons. To make things easier, I did a quick model of the concepts so the 2d guys could keyshot and paintover them from different angles, sped up the production a crazy amount. Each one of these took only bout an hour or two, was able to pump them out to the team super fast since I didn't have to deal with unwrapping or textures at all. In the end the concepts came out pretty well. Too bad the game sucked.