Valentine's Day is activated by purchasing the upgrade "Lovesick biscuit", which will launch it for 24 hours. It is available after purchasing the heavenly upgrade "Season Switcher" which lets you trigger seasonal events at will, for a price. Triggering seasons is repeatable, but will get more expensive every time. It will also cancel any other seasonal event that is on at the time you click it. The golden cookies appearance during the Valentine's Day season: File:Шоколадные сердца.png