The Core is a total conversion single-player mod for Half-Life. Survive the disaster as Maurice Andrews, a low level engineer stationed in Black Mesa during the events of the resonance cascade. Seemingly trapped, Andrews must fight his way to the surface to survive.
These are extremely WIP, but I'm very pleased with how my trams turned out. Also, since this is based on an actual location from Half-Life, I've really enjoyed mapping the ridiculousness of the facility's underbelly.