The weapons from destiny only slightly resemble familiar guns, but they combine so many different colours and new mechanisms to create a whole new outcome of firepower. Every weapon in the game is different (in abilities and appearance), so a unique design for each material, barrel, and additional specs is key.
For almost a full year I've been working on a series of vehicular concepts for Author D.E. Kinney. This is a racer with the main character driving. This post describes some of the process of concept definition and refinement.