Half-Life: Residual Life is a Game Mod for Half-Life developed by a Korean-based team called Radiation Studios. While the first release was in 2012, Radiation Studios has completed work on it, and is as of 2020 on version 1.9 public final. The player character is Sora Kim, a clean suit-clad reactor engineer working at Black Mesa's Lambda Complex ...Read More. When the resonance cascade hits, the player must control Sora as she survives the subsequent ordeal. The mod is notable for its expansive maps and alternate paths (deviating from its parent game's nonlinear presentation). The story is more than a little vague, though according to the developers it is based on (or at least inspired by) Half-Life story writer's Marc Laidlaw's book The Third Force: A Novel of Gadget.