Broken Coil Drop
General
The Broken Coil Drop is a glitch in Horizon Zero Dawn where the player gets a green coil instead of one or multiple purple coils, caused by using Early Embrace Escape.
How To Activate
In order to get a broken coil drop, you will first need to use the Early Embrace Escape glitch or one of it's equivalents such as Varl Skip or Southern Embrace Escape. Once you have done this, locate a machine with a chance of or guaranteed purple coil drop. After killing the machine, you will see the looting symbol show as purple, but upon looting the machine, you will find that it only holds a single green coil, most commonly a 5% damage coil.
A video showing the glitch:
Discovery
The glitch was likely discovered by Fleur_Bleue101 in early 2021, when testing things with Early Embrace Escape.
Mechanics
The glitch is partially visual and partially gameplay affecting. It is likely caused by the game forcing the first coil drop or first few coil drops to be green. This overrides the game wanting certain machines to drop purple coils, but the game will still show the purple looting symbol.