In extremely cool promotional packaging news, London’s OMSE and New Zealand’s Think Packaging teamed up for a curious little piece of Mahjong magic.

Recently, Shanghai’s first gin brand – Peddlers Gin – launched their new custom bottle. To celebrate the occasion, the brand and the designers cooked up an elaborate announcement that the new Peddlers bottle had finally arrived and it involved a heaping dose of mystery. They sent 100 of the best bartenders across China a key held in a waxed-sealed envelope.