Ubisoft handed Amon Tobin a stealth game and he turned in a record that works with the controller unplugged. Chaos Theory, written for Splinter Cell 3 in 2005, is all held breath: broken percussion, upright bass, metal-on-metal textures and long stretches where almost nothing happens while the tension keeps climbing anyway. It remains the clearest argument that a game score can be composition rather than accompaniment. Ninja Tune marks twenty years with a double LP on 140g transparent green vinyl. Street date: December 18.