In the early stages of Destiny, the original game and not the sequel, players made a wonderful discovery. There was a cave in the Old Russia area of the open world where some sort of glitch made enemies respawn constantly, with higher drop rates than usual. Destiny being Destiny, word soon spread, and the cave would be constantly encamped by multiple player groups, annihilating anything that poked its head out, and watching the colourful little loot globs scatter everywhere. You'd sit there shooting for minutes on end, then gleefully go on a little rat-run through the firing zone, engrams endlessly flowing into your guardian.
If you ask me, Destiny never got better. The loot cave persisted for a short while before Bungie inevitably nerfed it, though it was so beloved that the developer also inserted an Easter egg where once it stood.
