The Gjallarhorn is a legendary exotic rocket launcher from the video game Destiny, quickly becoming an icon of gaming culture due to its immense power and rarity. It first gained meme status when the merchant Xur sold it during the game's second week, leading many players to skip it—a decision they would deeply regret. This birthed the 'Must have max Gjallarhorn' requirement in LFG posts, symbolizing elitism and the hunt for the ultimate loot. Every August 14th, the community celebrates Gjallarhorn Day to commemorate its return to Xur's inventory. Today, it stands as a symbol of nostalgic triumph, explosive power, and the chaotic joy of the Destiny franchise.