Just a quick heads up: the Easter event was left up for a good while to give everyone a chance to discover the eggs as they're leveling up - but since we're well into May now, it's probably time to close it off for this year.
This said, I'll leave it up until the weekend - if you have any eggs to find, or eggs to trade, it's best to do that before the end of Sunday, May 8 2016. :3
