Warhammer 40,000 is a long-running science-fiction setting known for its grim, war-torn worlds and larger-than-life warriors, and clips inspired by its music and atmosphere have become popular audio for fan edits. The Heart of Rage theme fits that world because it captures anger, determination and the scale of battle, which is why creators reuse it beyond Warhammer content. It now appears in gaming montages, reaction edits and short-form videos where a scene needs sudden intensity, and its recognisable Warhammer connection keeps it relevant for fans sharing battle-themed content.